The Philadelphia Phillies have recently lost a promising pitcher to the Boston Red Sox, marking a significant turn of events after a year that saw a drastic decline in his strikeout performance.
As we step into 2026, the Major League Baseball offseason has been relatively uneventful, leaving fans and analysts alike eager for updates on player movements. Despite numerous high-profile free agents still available on the market, excitement has yet to build.
Among the flurry of activity, there have been several minor signings as teams continue to shuffle their rosters. One notable move involved Devin Sweet, a former member of the Phillies’ farm system, who opted for free agency at the conclusion of the last season. The Red Sox have now brought him on board by signing him to a minor-league contract, which includes an invitation to spring training.
Sweet’s transition to the Red Sox comes after a lackluster season spent with the Triple-A Lehigh Valley IronPigs, where he failed to meet the expectations that the Phillies had hoped for. After acquiring him from the Detroit Tigers in November 2024, the Phillies anticipated Sweet would be a powerful addition to their bullpen, known for his impressive strikeout ability. However, his potential remained unfulfilled despite his limited experience in Major League Baseball prior to joining the Phillies.
In 2024, during his stint in Triple-A, Sweet showcased a respectable performance over 76 innings, recording a 3.91 ERA and a 1.32 WHIP. What particularly stood out was his impressive strikeout total; across 52 games—including four starts—he amassed 111 strikeouts, resulting in an exceptional strikeout rate of 33.9 percent and an average of 13.14 strikeouts per nine innings (K/9).
However, the following season painted a different picture. In 2025, Sweet struggled significantly, appearing in 46 games (with two starts) and finishing with a 5.08 ERA and a 1.44 WHIP. His strikeout numbers plummeted, as he managed to strike out only 49 batters in 51 and a third innings, translating to a stark drop to a 21.2 percent strikeout rate and just 8.59 K/9.
Additionally, while his strikeout numbers waned, his walk rate remained unchanged, which raised further concerns. In fact, he recorded an 11.7 percent walk rate and an average of 4.73 walks per nine innings, both slightly higher than his previous year's statistics.
Sweet made his MLB debut in July 2023 with the Seattle Mariners, but his time there was short-lived as he participated in only two games before being designated for assignment. He was then picked up by the Athletics, where he appeared five times, ultimately concluding that year with a troubling 10.38 ERA in major league play.
There’s hope that the Red Sox's renowned pitching development program can help Sweet rediscover his strikeout prowess and become a reliable option for their bullpen, fulfilling the potential that the Phillies were unable to tap into.
