Position: Senior Researcher, Baseball Research & Development

Job Summary:
The Kansas City Royals Baseball Club is seeking a highly motivated and creative Senior Researcher to develop models and methodologies for use in decision-making by members of baseball operations. The ideal applicant will possess knowledge of data-driven techniques for use in leveraging baseball data to provide a competitive edge and innovative solutions to the Kansas City Royals.

Reports to the Assistant General Manager, Research and Development

Accountabilities:

• Leverage statistical learning techniques to improve player evaluation and forecasting
• Develop novel research ideas and work with other members of baseball operations to cultivate curiosity regarding baseball data
• Implement project management best practices and mentor other analysts throughout the research and modeling phases of projects
• Evaluate existing infrastructure for continual improvements and codebase maintenance
• Communicate R&D products to non-technical stakeholders and utilize their feedback to improve and iterate on tools

Qualifications:
Required

• Graduate degree or two years’ work experience in statistics, computer science, machine learning, mathematics or a related field
• Ability to work evening, weekend, and holiday hours during the baseball season is a must
• Excellent interpersonal/communication skills and ability to interact and work with staff at all levels
• Ability to recognize and maintain confidentiality of work materials and issues as appropriate
• Knowledge and understanding of baseball and/or baseball data
• Proficiency with some of the following tools and/or software:
• Python, R, or similar
• SQL

Preferred

• Comfort with machine learning frameworks such as Tensorflow or PyTorch
• Experience modeling and visualizing large sets of time series data
• Knowledge of Bayesian frameworks such as Stan or Tensorflow Probability
• Proficiency in Django, HTML, JavaScript, CSS and other web development frameworks

To Apply:
To apply, please use this link.

The content in this posting was created and provided solely by the Kansas City Royals.

Ralph Garza Jr.’s MLB debut was both forgettable and impossible to forget. The 27-year-old right-hander took the mound for the Houston Astros in a May 29 home game against the San Diego Padres, and the circumstances were anything but ordinary. Rookies rarely get their feet wet with games hanging in the balance, and Garza entered in the 12th inning with the score knotted at eight runs apiece. Moreover, the Friars — their eventual free fall still far in the future — had won 14 of their last 16 games. A hornet’s nest awaited.

“It wasn’t your stereotypical debut,” acknowledged Garza, who two months later was designated for assignment and claimed off waivers by the Minnesota Twins. “But it’s funny, because as a reliever you’re told to always prepare for the worst. And it was something, especially against that lineup at that time. They were hot. Basically, I was being thrown into the fire. It was extras, last guy available, ‘There you go.’”

When the bullpen phone rang, he knew that his debut was nigh. It was a moment where Garza needed to remind himself to “stay calm and remember what you do, and how to do it.” Easier said than done. As the Edinburg, Texas native aptly put it, keeping one’s emotions in check when climbing a big-league bump for the first time is “like trying to tell water not to be wet.”

Garza entered with a ghost runner on second and promptly issued an intentional walk to Fernando Tatis Jr. A harmless fly-ball out followed, but soon things went south. A few pitches later, Wil Myers launched a mis-located heater into the cheap seats, turning a coming-out party into a nightmare. Garza knew it right away. Read the rest of this entry »

Kris Bubic leans heavily on his changeup. The 24-year-old Kansas City Royals left-hander has gone to his signature pitch 30.9% of the time this year, the fourth highest percentage among hurlers with at least 120 innings. Low velocity and low spin are two of its attributes. Bubic — a Stanford product whom the Royals drafted 40th overall in 2018 — throws his change-of-pace 80 mph on average, with a 1,602 rpm spin rate.

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Kris Bubic: “At the end of Little League, around 13 [years old], I had a club coach — his name was Erick Raich — and I tried to throw a changeup. At that point you’re not really developed enough to throw a breaking ball, at least not in my opinion. Your hand speed isn’t there, and the ball is bigger than your hand, so it’s tough to hold it and whatnot. Even a changeup. But the changeup was the first off-speed pitch I learned, and he showed me a standard circle grip. I threw a four-seam fastball, and [the changeup] was just a four-seam circle. It was pretty simple.

“As I developed it, I would play catch with it constantly, at 90 feet, at 120 feet, just to get the feel for it. I’d feel myself releasing it out front to get that good extension. But I think the separator for me… there are two things, actually. One is the velocity difference I’m able to create off my fastball. Two is that it essentially spins the same. There is variability with changeups — some have sidespin, some guys have split grips and whatnot — but mine essentially spins the same as my fastball. The axis is a little tilted toward more sidespin, but not enough that you can really tell from the eye. Read the rest of this entry »

These are notes on prospects from Tess Taruskin. Read previous installments of the Daily Prospect Notes here.

Bobby Witt Jr., SS, Kansas City Royals
Level & Affiliate: Triple-A Omaha Age: 21 Org Rank: 1 FV: 60
Line: 1-for-4, HR, BB, 2 K

Notes
Witt’s ninth-inning dinger on Thursday was his 32nd of the year, the third-most of any minor leaguer this season. Only seven guys have hit at least 30 homers in the minors in 2021, and in comparing Witt to the others in that group, it’s impossible not to notice his impressive and rare combination of speed and power. Of those seven power hitters, Witt is the only one to match his 30-plus homers with 30-plus doubles, and his 24 steals amount to quadruple the second-highest mark on the list (Andy Pages‘ six). He also has the highest average and more hits than anyone in that elite group, and his strikeout rate is the third lowest of the bunch, which may help calm the nerves of those concerned about his swing-and miss-potential. If he can improve upon his walk rate, his already-high profile could be boosted even further. Read the rest of this entry »

In 2020, Carlos Santana had a down year. That happens to players all the time, and it’s particularly excusable in the pandemic season. Sixty games can make anyone look bad, and that’s before you get into the vast changes in routine. So while a .350 slugging percentage is obviously concerning, particularly from a first baseman, it’s nothing that you couldn’t hand-wave away by whispering his walk rate or xwOBA to yourself in a soothing voice.

In 2021, Carlos Santana is having a down year. If once is a coincidence, twice is a trend, and this certainly looks bad. The Royals’ problems don’t start at first base, but he certainly hasn’t been the answer there, and I’m skeptical that things will get better. Yes: Carlos Santana has turned into a pumpkin. Read the rest of this entry »

The Royals aren’t going anywhere this season, but that doesn’t mean they’ve thrown in the towel. In the second half of August alone, they’ve taken series from the Astros, Cubs (a sweep), and Mariners and won 10 of 14 games. One big reason for their surge has been Salvador Perez, who’s homered eight times in that span and gone deep in his last five straight games. After a stellar showing in the shortened 2020 season — his first back from Tommy John surgery — he has already set a career high with 38 homers and appears on his way to several other full-season highs in counting and rate stats.

Indeed, the 31-year-old backstop has been on quite a binge lately. After hitting 21 homers in the season’s first half, Perez participated in the Home Run Derby, losing out to eventual champion Pete Alonso in the first round. His 17 homers since the All-Star break are tied with Joey Votto for the major league lead, and he’s second overall to only Shohei Ohtani (41).

Within that stretch, Perez homered in three consecutive games from July 28 to 30, his longest streak since 2017, then separately matched and surpassed his career-best streak of homering in four straight games, which he did April 6–9, 2017. What’s more, on August 26 against the Mariners’ Joe Smith and a day later, against Logan Gilbert, he hit two grand slams, the first of which erased a 4–1 deficit and the second a 5–1 deficit. In doing so, he became the 25th player in major league history and the first since the Brewers’ Tyler Saladino in 2019 to hit slams on back-to-back days. Here’s a supercut of the homers from his five-game streak:

In the wake of the first home run in that clip, one of the announcers notes that Perez is on pace to become just the sixth catcher to hit 40 home runs in a season, but that’s not quite correct. A player has hit at least 40 homers while spending the majority of his time as catcher six times; he is on track to become the seventh. However, a player has hit at least 40 homers while in the lineup as a catcher — as opposed to getting a breather at another position, whether it’s first base or designated hitter or pinch-hitter — five times, and Perez isn’t anywhere close to becoming the sixth:

Bench, man. In that 1970 season, when he was 22, he homered 38 times in 137 games as a catcher, five times in 14 games as a left fielder, and once apiece as a first baseman and right fielder, that while playing each of those positions seven times. In 1972, he homered 34 times in 127 games as a catcher, four in 17 games as a right fielder, and two in four games as a third baseman. He won the NL MVP award in both seasons.

Read the rest of this entry »

These are notes on prospects from Tess Taruskin. Read previous installments of the Daily Prospect Notes here.

MJ Melendez, C, Kansas City Royals
Level & Affiliate: Triple-A Omaha Age: 22 Org Rank: 13 FV: 40+
Line: 2-for-4, HR, K, BB

Notes
Melendez’s four-bagger in Wednesday’s game was his 31st on the season, which ties him with Griffin Conine atop the minor league home run leaderboard.

As an added narrative wrinkle to their ongoing homer chase, Conine’s father (former big-leaguer Jeff Conine), is now an assistant coach at Florida International University under Melendez’s father, Head Coach Mervy Melendez. While the playful, multi-generational rivalry between the father-son duos makes for a compelling storyline, there’s plenty more to be gathered from Melendez’s performance this year, much of which adds significant shine to his prospect apple. Read the rest of this entry »

Whit Merrifield has long been one of the best base stealers in the game, but he has seemingly reached a new level of thievery this season, with 33 steals on only 35 attempts. That 94% success rate is the highest of his career and leads the majors among players with at least 20 attempts (Bo Bichette is an impressive 17 for 17). Our base running metric pegs him as the most valuable runner in the game, and he’s on pace to set a new career high in steals (he swiped 45 in 2018) with a chance to become the first player to reach 50 steals since 2017 — and all at the age of 32.

What’s particularly interesting is that, despite a 90th percentile Sprint Speed of 28.7 feet per second, which is about a half a foot per second off of his peak, Merrifield is far from elite when it comes to his short distance split times, which is a good way to gauge a player’s acceleration. His 90-foot split has gone from a peak of 3.89 seconds in 2018 to 3.97 this season, or from the 79th percentile to the 68th. Other elite thieves like Trea Turner, Byron Buxton and Tim Locastro have splits in the 99th percentile. Even Starling Marte, a fellow high success-rate stealer in his early 30s, is in the 81st percentile.

Base stealing is much more than a runner going top speed, though; it’s a mental and physical duel between the base runner and the pitcher. (That’s not to make light of the catcher’s role, but they are often left holding a baton, and the blame, for a race long lost.) What makes Merrifield the best base stealer in the game at a time when he’s far from the fastest player in the game is that he’s a master of this duel.

Exhibit A:

Read the rest of this entry »

When Nicky Lopez steps to the plate, there is no in-between to his game. Of the 315 players who have seen at least 1,000 pitches over the past two seasons, Lopez places 27th in swinging strike rate (7.5%), in the top third in chase rate (24.7%), and in the top quarter in terms of the percentage of pitches put into play (18.8%) (all stats are through games on August 10). He combines elite plate discipline with an uncanny knack for making contact, an unusual mix of skills in the majors today. Players tend to make a trade-off when choosing to be more selective by accepting that they will put fewer balls in play. Balls in play have about a 178-point wOBA advantage over plate appearances that end in a walk or strikeout. But balls in play on pitches outside of the strike zone only enjoy a 97-point advantage over the combination of walks and strikeouts, a much less enticing proposition. Thus, by avoiding swinging at pitches outside the zone, hitters maximize their chances of putting a high-value batted ball into play, but also lengthen the plate appearance and increase the chance they strikeout. Lopez does not make this tradeoff, as you can see below:

I referenced Lopez’s minuscule 7.5% swinging strike rate; as a percentage of the total number of pitches he has seen, he rarely swings and comes up empty. He either makes contact or doesn’t swing at all. And the rate at which he swings at pitches overall is another indication of his selectivity. Over the last two seasons (2020-21), he’s swung at just 44.2% of the pitches he has seen, 2.9 percentage points less than the rest of the league over that sample.

Selectivity is great if you make it count when you do swing and put the ball in play on those pitches more towards the heart of the zone. Lopez’s problem, especially in his 2019 debut and last season, is that he often hasn’t reaped the benefits of his patience. This is the other side of his game. He has posted barrel rates in the second, fourth, and first percentiles and hard-hit rates in the second and sixth percentiles in his three seasons in the big leagues. He has also yielded zone run values per 100 pitches of -4.44, -5.17, and -3.02 in those seasons, compared to 1.86, 2.30, and 2.97 on pitches out of the zone, a product of his excellent approach but lack of punch when pitchers challenge him (average is 2.10 for out of zone and -2.21 for in zone). His career wOBAcon on the balls he puts in play inside the strike zone is just .302, 101 points lower than the league over that span. Through 937 major league plate appearances, he has hit three home runs, none of which have come in 2021. His extreme lack of pop has manifested itself in a 56 and 55 wRC+ in 2019 and ’20, respectively, the latter of which was also a product of his in-zone contact rate cratering to 82.4%. That placed him in the 51st percentile in 2020, not nearly high enough to offset the types of balls he puts into play. Read the rest of this entry »

As a shortstop, you never want to be in this position:

You can almost see the expletives flying out of his mouth, and it gets worse: Nolan Arenado is out of frame to the right, which means that ball is ticketed for left field. How did it get to this point? Let’s back up.

When you’re fielding a bunt, decisions come at you immediately. Barehand it? Glove it? Lead runner? Take a beat and take the sure out? You have to make all of those choices in a split second. Here’s the play in the ninth inning of Sunday’s Cardinals/Royals game that left Paul DeJong lunging helplessly:

Obviously, it didn’t turn out well. But it’s not as though Paul Goldschmidt didn’t know there was a chance of failure going in. Going for the lead runner on a bunt is a high-risk, high-reward play; anyone could tell you that. How large was the risk? How valuable was the reward? Let’s find out together, because I think this situation is low-key fascinating. Read the rest of this entry »