CLEVELAND — In the seventh inning on Friday at Progressive Field, Astros starting catcher Brian McCann did not come out for his scheduled at-bat. Instead, fellow catcher Max Stassi appeared out of the third-base dugout as a pinch-hitter. Astros manager A.J. Hinch had elected to pinch-hit for his starting catcher with another catcher to face Indians left-hander Tyler Olson, owner of considerable splits. We don’t often see a manager pinch-hit for his starting catcher, but the decision worked: Stassi singled.

The Astros have not exactly made it a regular practice, but it was the eighth time they have pinch-hit with a catcher for a catcher this season in order to gain the platoon advantage. But the Astros are one of the teams that has regularly tried to do this with the left-handed McCann and right-handed Stassi and Evan Gattis. (With McCann going on the DL on Tuesday, the Astros’ aggressive catcher platooning will be placed on hold, probably.)

In an age where managers try to leverage handedness as often as possible, catchers have the lowest platoon advantage (41.4%) among all non-pitchers, according to research assistance from Sean Dolinar. Shortstop is next (42.8%) and is the only position that doesn’t enjoy a platoon advantage the majority of the time. What they share is status as specialized, glove-first positions:

If a club is looking for a position from which to extract more value by facing more opposite-handed pitchers, catcher is the untapped positional market.

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Every bit of value counts for the Angels, who share a division with probably the majors’ best team and who possess a 29.9% chance of making the postseason as of right now. Even slight improvement would be more meaningful to the Angels than most teams. And there’s perhaps a way the Angels can better employ the game’s most interesting and only two-way player in Shohei Ohtani to gain a little more value.

The Angels rank dead last in platoon advantage, their batters facing opposite-handed pitchers just 37% of the time, according Baseball Reference. The MLB average is 53%. The Indians, thanks in large part to switch-hitting stars Francisco Lindor and Jose Ramirez, lead baseball in holding the platoon advantage at a 69% clip.

The Angels have recorded the most right-on-right plate appearances (1,207) of any club this year, with the Astros representing the next-closest team (1,075).

Despite their right-handed-heavy lineup, the Angels actually rank second in baseball in right-on-right wRC+ (123) and ranked fifth last season (101). Having Mike Trout helps paper over many cracks — including platoon disadvantages — but there are only three Angels regulars who are better than league average against righties: Trout, Andrelton Simmons, and Justin Upton. As a whole, the Angels rank third against righties with a 109 wRC+, while they ranked in the middle of the pack with a wRC+ of 98 versus them last season.

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Baseball goes through its trends like about any other industry. Just about everything goes through a constant flow of peaks ebbing to lulls and then back to peaks agains.

Pitch types, for example, go through cycles of popularity. The curveball was out of fashion and now it is back. There are years where different pitches are more prominent than others. Different pitches do different things. They dart left, right, down, and appear to rise. They have different shapes, breaking in different depths. Their usage is tied to the swing plane, philosophies, and ball properties of the day.

You are probably aware that the two-seam/sinker has fallen out of favor in recent years.

While the fastball is generally losing market share in favor of breaking pitches, the four-seam fastball has actually enjoyed an uptick in popularity in recent years as pitchers take advantage of their newly quantified spin rates to better get over the swing planes of batters, who have adapted to hammer the low pitch, as Jeff Sullivan observed prior to last season.

In 2010, two-seam/sinker usage was at its peak of 22.5%, according to Pitch Info data. Four-seam fastball usage was at a pitch-tracking-era low of 34.8%. This season, two-seam/sinker usage is at a pitch-tracking-era low of 17.8%, its sixth consecutive year of decline. Four-seam usage is up to 37.6%.

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*Or would be, if the season ended today.

We know the Astros’ pitching staff has been absurdly dominant.

The truth is, they’re historically dominant at the moment.

Just a season after the Indians became the first team to strike out 10 batters per nine innings, set a record with a 27.5% strikeout rate, and finish with the highest pitching WAR total of all time (31.7), the Astros are a threat to top those marks.

The Astros have already recorded 11 WAR this season, while the next closest pitching staff, that of the Red Sox, has 7.9. The Astros are on pace to shatter the Indians’ WAR mark, and their 10.35 strikeouts per nine and 29.6% strikeout rate would also be records. Gerrit Cole, Charlie Morton, and Justin Verlander — who was outstanding against Wednesday — all have sub-2.00 ERAs.

(The Astros and Indians met last weekend, with the Astros taking two of three games, and Houston travels to Cleveland for a four-game series beginning Thursday. Get your popcorn ready.) Read the rest of this entry »

The following three figures correspond to measurements for which objective data exists. One of them is the height above the ground at which the average major-league pitcher releases the ball. Another is the height at which a particular mystery pitcher releases the ball. Finally, the third is the height of this author’s three-year-old son.

(a) 2.18 feet
(b) 3.25 feet
(c) 5.75 feet

Here, with a minimum of suspense, are the corresponding answers:

(a) Mystery pitcher’s release point.
(b) The height of this author’s son.
(c) The average vertical release point of major-league pitchers.

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What does it mean to be “underrated?” The label suggests public perception is not in line with actual value, which for whatever reason is obscured. The term gets tossed around often and recklessly, like many labels. But in the case of Brandon Belt, there is some merit in making the claim.

Since the start of the 2015 season, Belt ranks 11th in the majors in walk rate (13.6%). He’s tied with Carlos Correa and Edwin Encarnacion for 17th in wRC+ (135). Over the last three-plus seasons, Belt also ranks 16th in on-base percentage (.375).

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Necessity is said to be the primary motivator behind innovation. And no franchise is faced with a more difficult environment in which to compete, is confronted by a greater need for innovation, than the Tampa Bay Rays.

In possession of either the worst or second-worst stadium situation in the majors, with small-market revenues, the Rays also share a division with coastal elites like the Yankees (+76) and Red Sox (+75), who rank second and third in the majors in run differential, respectively, behind only the Astros (+98).

Because of this, the Rays have been more willing to experiment than just about every other club over the last 15 years. They brought defensive shifts to the American League, signed Evan Longoria to a club-friendly deal six days after he debuted in the majors, and have limited starting pitchers to two trips through the order more aggressively than any other club. This spring, they planned to employ a four-man rotation.

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The Angels rotation is interesting for a number of reasons.

For starters, it houses Shohei Ohtani, who is living up to and even exceeding the unprecedented hype that surrounded his arrival to the major leagues. Then there is the six-man nature of the rotation, an experiment that is working to date — a point explored in some depth by Craig Edwards earlier this week. Angels starting pitchers rank fourth in the American League in WAR (3.5), fourth in ERA (3.77), fourth in FIP (3.90), fourth in xFIP (3.84), third in strikeout percentage (24.6%), and fifth in ERA- (90).

Along with Mike Trout and Andrelton Simmons, that rotation is a big reason why the Angels are just two games behind the Astros in the West and appear to be a Wild Card favorite at the moment, with roughly a 50% chance of reaching the postseason, a mark which trails only the three division leaders and Boston.

Ohtani has been pitching like an ace. Tyler Skaggs is giving us reasons to remember why he was a top prospect. Jaime Barria has a 51 ERA-. Garrett Richards is healthy and averaging 96 mph with his fastball. Nick Tropeano has managed to be effective with a low-strikeout, low-fly-ball approach.

And then there is the curious case of Andrew Heaney.

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We know the Aaron Judge story. He was a prospect whose contact ability was questioned. Would his 80-grade power play in games? After working on a swing adjustment in the winter of 2016-17, however, he dramatically improved his contact rate, posting a remarkable 173 wRC+ last season while nearly winning the AL MVP award.

In the 21st century, there have been only 31 completed or ongoing seasons with a wRC+ better than Judge’s mark. And what’s remarkable is that one of those — though, just a partial season — is Judge’s 2018 campaign, in which he has a wRC+ of 178.

After making one of the most dramatic year-to-year improvements in major-league history, Judge has actually improved through the first quarter of this season, which is amazing in a different way. While making gains is one thing, consolidating them is another, with the wealth of scouting information available.

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