Tommy Kahnle Is Returning to the Bronx… Again

Tommy Kahnle has once again found himself back with the Yankees. Drafted by the team in 2010, he played four seasons in the minor leagues with the organization but was scooped in the Rule 5 draft by Colorado and pitched there in 2014. His stint in Denver wasn’t long, and he eventually found himself traded to the White Sox for Yency Almonte. Chicago is where Kahnle rose up as a prominent reliever; in 2017, it all clicked for him, and the Yankees thought so too, acquiring him along with David Robertson and Todd Frazier before that year’s trade deadline.
Each of them played a pivotal role in the first ALCS run of the Baby Bomber era. But after more than three seasons with the club, Kahnle was waived due to injury — a torn UCL — and missed all of 2020 and ’21. After a long rehab, he made his comeback with the Dodgers in 2022 and showed he still has his stuff, making him a coveted reliever in this year’s free-agent class. His two-year, $11.5 million deal with the Yankees begins yet another stint in the Bronx for the 33-year-old reliever.
The reason for the Yankees’ interest in Kahnle is the same as it’s always been: he posses an elite changeup that plays perfectly with his four-seamer. When looking at the quality of his changeup, no one aspect sticks out relative to his peers. In 2022, its vertical movement was 11% above average, and its horizontal movement was 12% below average; that vertical movement was higher than it had been in any year of his career, and the horizontal movement was about in line with previous seasons. Basically, the pitch is closer to horizontal neutral and has plenty of vertical depth. The horizontal approach angle (HAA) reinforces the movement with a -0.2 degree entry into the zone, and the vertical approach angle (VAA) is steep at 7.0 degrees.
Changeups are difficult to diagnose and/or develop. Similar to any other pitch, you’re looking for unicorn qualities to see what makes it so lethal. Does it have an extremely sharp or steep entry into the zone? Does it move so much that hitters just cannot get a barrel on it? Is the movement profile unique for the given player’s extension and/or release point? These are just a few questions you ask about any pitch, but with changeups specifically, another crucial component is how the pitch plays with the primary fastball, whether it be a sinker, four-seamer, or both.
The beauty of the changeup is in the deception. If you can get a hitter to see a fastball for as long as possible, then you can get them either to swing over the pitch or hit the ball on the top third and ground out. Kahnle’s ability to do this while commanding his changeup location is why teams like the Yankees, Dodgers, and other advanced thinkers covet his services and want him to spam the pitch. Read the rest of this entry »