The Phillies have signed former NPB pitcher Koyo Aoyagi to a minor league contract with a non-roster invitation to MLB camp, the team announced. The Hanshin Tigers made him available via the posting system on December 4.
Aoyagi’s posting window would have closed this evening. Had he not signed with a major league team, he would’ve returned to the Tigers. Aoyagi preferred a non-roster invite over staying with the NPB club. It’s unclear what his salary would be if he makes the major league roster. The Phils would owe a 20% posting fee to the Tigers on whatever salary or bonuses Aoyagi unlocks.
The 31-year-old righty projects as a depth arm. While he worked as a starting pitcher for the Tigers, Aoyagi throws from a sidearm slot that’s more commonly found in the bullpen. He’s coming off a pedestrian season which he split almost evenly between the Tigers and their minor league affiliate. Aoyagi made 12 starts at Japan’s top level and pitched 11 times in the minors.
During his work at the highest level, he turned in a 3.69 ERA across 61 innings. His 13% strikeout rate would be nearly 10 percentage points below the MLB average. He showed decent but not exceptional control, walking 7.8% of batters faced. His career track record is a bit more impressive. He owns a 3.08 ERA with a 17.1% strikeout percentage across nine NPB campaigns. This was his second consecutive middling season, though. Aoyagi was tagged for a 4.57 ERA across 100 1/3 innings for the Tigers in 2023.
The 5’11” hurler pitched for Japan at the 2020 Olympics (held in Tokyo a year late as a result of the pandemic). Japan went 5-0 and won the gold medal, though Aoyagi was tagged for five runs in 1 2/3 innings across two appearances. He did not make the nation’s World Baseball Classic roster two years later.
