The first round of All-Star voting comes to a close on June 26th, which means we’re just over a week away from an annual tradition unlike any other: Anthony Rendon not getting the respect he deserves. He’s sitting fifth among NL third basemen in the vote, below the top-3 cutoff for this year’s final-day runoff. He’s also sixth in the majors among all batters in fWAR, which likely means he’ll make his All-Star debut this year. Yes, you read that right — Anthony Rendon has never been an All-Star.
All-Star results aren’t everything, of course. They matter for arbitration payouts, as Tommy Pham will tell you, but they’re not always (or even often) accurate reflections of who has provided the most value on the field. Still, it’s remarkable that Rendon has never been an All-Star. Since he debuted in 2013, he’s been the 12th-most valuable hitter in baseball, second only to Josh Donaldson among third basemen. If Rendon makes the team this year as a reserve, it will be fitting, because he’s never been more deserving than he is right now; he’s taken his offensive game to new heights from an already impressive baseline. He’s been outright Trout-ian at the plate this year, fixing weaknesses while sticking with strengths.
When I looked into Rendon’s 2018 this offseason, I focused on his newfound aggression. He increased his swing rate more than almost every other player in baseball last year, particularly on the first pitch of a plate appearance. Looking back a few more years, this seems like a change Rendon has been leaning into over time. He was passive to start at-bats at the start of his career, and he has been ramping it up over time, though he’s dialed it back marginally this year:

First-pitch swing rate is a blunt tool. Imagine a batter who is universally feared. Pitchers rarely attempt to challenge him. They throw him strikes on only 10% of first pitches. He’s wildly aggressive, swinging at 80% of strikes and 10% of balls. Still, that’s only an 17% swing rate, which sounds quite passive. Imagine another hitter, this one a patient sort with no pop whatsoever. Pitchers absolutely pound the zone against him — we’re talking a 90% zone rate, completely unheard of. He’s one of the most patient hitters in baseball, only swinging at 20% of strikes, and no balls whatsoever. This gets him to an 18% first-pitch swing rate. Clearly, we need to consider how pitchers attack Rendon to say anything definitive about his swing rates. Read the rest of this entry »