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This week, Brock Beauchamp posted in the Twins Daily forums on the increasing value of the Ryan Pressly trade. While the irony of the Twins bullpen performing strongly long after they were out of contention is not lost on most Twins fans, Alcala’s breakout may have been. In the second half of 2021, he made the leap to bona-fide high-leverage relief pitcher.
Let’s begin by considering the big picture before we dive into the minutiae. Alcala may not have remained with the big league team all season given his first half if the rest of the Twins pitching wasn’t struggling so much. He put up a 4.67 ERA, 2.3 HR/9, 5.53 FIP, and just a 23% K%, pretty underwhelming for someone who can throw 100 mph. The second half, however, was a different story, Alcala managed a 2.88 ERA, 0.36 HR/9, 2.01 FIP, and a 32% K%, (Wow!) Alcala massively improved his ability to limit hard contact, keep the ball in the ballpark, and strike opposing hitters out, so, what changes led to this development?
Tweaking his Pitch Mix
Let’s start with Alcala’s pitch mix. In order for him to become a consistent back-end bullpen arm, Alcala has been working on incorporating a changeup into his pitching repertoire since the beginning of the 2020 season. Early in his career (and the first half of 2021), Alcala’s fastball was prone to be hit hard due to poor control and command.
Alcala has reduced his use of his fastball from around 65% when he broke into the league in 2019 to just 36.6% at the end of the 2021 season. Similarly, he has increased his changeup usage to 16%, as his comfort with the pitch has grown.
The value and effectiveness of Alcala’s changeup has increased significantly, due to his improved command and ability to keep the pitch down in the zone, and his ability to develop arm-side run when throwing it.
A More Effective 4-Seam Fastball
In addition to tweaking his pitch mix, Alcala’s fastball has become significantly more effective in 2021. Alcala has pushed the location of his four seam fastball further up the strike zone.
Additionally, Alcala has developed over three inches more horizontal movement when throwing this pitch. Velocity in the high 90s with no lateral movement is one thing. Velocity in the high 90s with four inches of horizontal movement is another. This is leading to less consistent contact on the pitch.
Improved Command
If you want overall indicators of improved control from Alcala in 2021, they are everywhere. His first-pitch strike% improved 11.4%, his in-zone% improved 6.7%. What the Twins now have on their hands is a reliever who throws in the high 90s, has two strong complimentary pitches, an excellent BB%, and has shown the ability to implement changes which improve his command, and the movement of his pitches. A dominant Jorge Alcala, coming to a bullpen near you in 2022.
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