Michael Lorenzen Heads to Philadelphia, and Possibly to the Bullpen

The Phillies and Tigers are at it again. After a five-player swap back in January, Dave Dombrowski is making another trade with his former club. With the top five teams in the NL wild card race currently separated by a grand total of one game in the loss column, the Phillies, currently in command of the second wild card spot by a whopping half a game, decided to grab a reinforcement for the rotation and bullpen, trading prospect Hao-Yu Lee to the Tigers in exchange for right-hander Michael Lorenzen. They also designated veteran utility man Josh Harrison for assignment to make room for Lorenzen on the 40-man roster. And at least one Phillies player is very excited about this trade:
Brandon Marsh, who played with Michael Lorenzen in 2022 with the Angels, says he is a “great pitcher, an incredible teammate, and has big biceps.”
“He’s gonna be a great fit here. I’m super excited to see him again and give him a hug. I hope he picks me up. He’s strong.”
— Alex Coffey (@byalexcoffey) August 1, 2023
The 31-year-old Lorenzen, who will be a free agent this winter, is in the midst of his best season since 2020, running a 3.58 ERA and a 3.88 FIP. That improvement has largely come via limiting walks: after averaging a 9.9% walk rate from 2017 to ’19, he’s at 6.5% this season. He’s done that not by increasing his chase rate, but simply by throwing more pitches in the zone, with his zone rate rising from 39.8% in 2022 to 45.7% this year. Lorenzen throws four pitches more than 10% of the time — four-seamer, slider, changeup, and sinker — and is throwing all of them in the zone more often this season than last. In doing so, he traded some whiffs for some called strikes, a swap that has so far paid off. He’s also improved dramatically against lefties, with a .279 wOBA against them this year, down from a career mark of .323.
There’s a troubling trend worth noting, though. Lorenzen’s 4.80 DRA is higher than his 2022 mark of 4.32. His average exit velocity and barrel rate are at career highs, and while his .323 wOBAcon is right in line with last year’s .329 mark, his .362 xwOBAcon is the highest since his rookie season in 2015. Lorenzen might be getting a little lucky on balls in play or getting a little extra help from his defense. Both of those tricks will be harder to pull off at Citizens Bank Park than they were at Comerica Park. Still, it might help your wOBAcon just a bit when the center fielder is willing to run through a brick wall for you. Read the rest of this entry »