Brewers, Diamondbacks Swap Andrew Chafin For Peter Strzelecki

The Brewers have picked up left-hander Andrew Chafin in a trade with the Diamondbacks, according to Ken Rosenthal of The Athletic (Twitter link).  John Gambadoro of 98.7 FM Phoenix reports that right-hander Peter Strzelecki is headed back to the D’Backs in return.  Rosenthal linked Milwaukee to Chafin’s market earlier today.

Give how Arizona also just landed Paul Sewald from the Mariners yesterday, it makes for an interesting buy/sell dynamic with the Diamondbacks’ front office.  Obviously the D’Backs have designs on reaching the postseason, yet still opted to pull the trigger on dealing a reliever who is technically a rental player, since Chafin only signed a one-year, $6.25MM deal last winter.  However, he is controllable through next season via a $7.25MM club option ($750K buyout), so the Brew Crew could potentially be viewing Chafin as a member of their 2024 bullpen.  Incidentally, Chafin also receives a $250K bonus now that he has been traded.

That said, the D’Backs are also getting back a controllable reliever in Strzelecki, who has posted some good results over his two MLB seasons.  Since Strzelecki isn’t a free agent until after the 2028 season and naturally comes at a much lower price tag than Chafin, the Diamondbacks saved some money while perhaps not taking much of a hit to the overall quality of their relief corps.

Chafin has a 4.19 ERA over 34 1/3 innings this season, with that number only just inflated by a disastrous outing (five runs in two-thirds of an inning) against the Braves on July 24.  The southpaw’s SIERA is a more solid 3.38, and his 32.7% strikeout rate put him the 94th percentile of all pitchers.  Chafin’s control has fluctuated throughout his career, and the pendulum has swung down this season, as he has an ungainly 12.0% walk rate.

Now in his 10th MLB season, Chafin has been a generally reliable relief arm over his career, and he’ll now change uniforms once again to join a Brewers team in severe need of left-handed depth.  While Hoby Milner is having a strong season, he has been the only left-hander in Milwaukee’s bullpen for most of the season.  The Brewers were hoping to have Justin Wilson back from Tommy John surgery, yet Wilson unfortunately suffered a lat strain while warming up in his return outing, and was placed back onto the 15-day injured list.

With no timeline yet on Wilson’s return, it is easy to see why the Brewers were so aggressive in seeking out another left-hander, and in dealing a controllable pitcher from their right-handed relief depth.  Strzelecki was an undrafted free agent for the Brewers in 2018, but he made his way to the majors to toss 70 2/3 innings for Milwaukee over the last two seasons.  Despite near-identical SIERAs (3.47 and 3.66) and pretty similar secondary metrics over his two years of work, Strzelecki had a 2.83 ERA over 35 frames in 2022, but a 4.54 ERA in 35 2/3 innings this season.

One of a few hidden pitching gems uncovered by the Brewers front office and pitching development staff, Strzelecki has a 25.3% strikeout rate and 8.2% walk rate over his career, both above the league average.  A slightly loss of control (though not in the walk category) could be one reason for Strzelecki’s relative dropoff in performance this year, as he has hit eight batters.  The Brewers only just called Strzelecki back up from the minors after a month-long stint at Triple-A, and he didn’t make another appearance prior to the trade.