Phillies Top 30 Prospects No. 13: Wen-Hui Pan Working Back From Injury

This is the eighteenth in a series of stories breaking down the Philadelphia Phillies’ Top 30 prospects heading into 2026.

23-year-old right-hander Wen-Hui Pan has just 29.1 innings to his name since the start of the 2024 minor league season. A broken pinky pushed the Taiwanese signee’s 2024 debut back to late June and, while he performed admirably in spite of the injury, posting a 1.29 ERA with 22 strikeouts over 21 innings in his return to High-A Jersey Shore, Pan required Tommy John surgery at season’s end, wiping out his entire 2025 campaign.

Pan stands 6-foot-3 and weighs 220 pounds, a relief pitcher with electric stuff: his fastball and splitter grade in at 65 and 60, respectively, on the 20-80 scale used for prospect evaluation. The four-seamer sits in the mid-to-upper 90s, with Pan able to dial close to triple digits as he tries to put batters away. His mid-80s splitter has highlight reel potential, with 63 percent of swings missing on the offering in 2024, and he can mix in the occasional mid-80s slider as well.

Pan hasn’t had many high-leverage opportunities in the Phillies’ system to date, given 12 save opportunities over 51 career appearances, but that could be a result of his injury in 2024: the previous season, 44.1 of Pan’s 63.2 innings came in the seventh or later, a tick more than his 15 of 29.1 the following season. He also limits walks, posting a strikeout-to-walk ratio of 3.73 to this point in his minor league career.

Depending how his recovery from Tommy John surgery goes, Pan should be well on his way to a big league debut at some point in 2027. He went under the knife in November 2024 and, with a projected 18-month recovery window, should return to the mound before June.