Taiwan Reliever Jyun-Yue Tseng Enters MLB Posting
Right-hander Jyun-Yue Tseng of the Taiwan Fubon Guardians is now available to Major League Baseball teams through the posting system.
Updated on Nov. 7, 2026 in Baseball
Taiwan Fubon Guardians reliever Jyun-Yue Tseng has entered Major League Baseball's posting system, making him available to teams. Teams may sign the 25-year-old right-hander as a free agent from Sunday until Dec. 22.
Why it matters
Tseng posted 25 saves in 48 games this season in the Chinese Professional Baseball League, giving major league clubs a look at a live arm from Taiwan. The window is set to close as MLB's collective bargaining agreement expires on Dec. 1, with a lockout expected to cut short the negotiating period.
Tseng went 5-3 with 25 saves in 48 games and struck out 65 while walking 13 in 52 1/3 innings in the Chinese Professional Baseball League this year. He averaged 93.7 m.p.h. with his four-seam fastball against South Korea in the World Baseball Classic.
The players
Jyun-Yue Tseng
A 25-year-old Taiwanese right-hander who pitches for the Taiwan Fubon Guardians and previously played in the Little League World Series.
Major League Baseball
The top professional baseball league in the United States and Canada, which oversees the posting system through which Tseng became available.
Taiwan Fubon Guardians
A professional baseball club in Taiwan's Chinese Professional Baseball League, which Tseng currently pitches for.
The details
Tseng, a 25-year-old right-hander, pitches for the Taiwan Fubon Guardians and threw hitless innings against South Korea and the Czech Republic in the World Baseball Classic. Under MLB's posting agreement with the CPBL, the posting fee is 20 per cent of the first $25 million of a major league contract, falling to 17.5 per cent of the next $25 million and 15 per cent of any amount above $50 million.
Timeline
2014: Tseng played in the Little League World Series.
2021: Tseng was named CPBL Rookie of the Year.
Sunday through Dec. 22: Teams may sign Tseng as a free agent.
Dec. 1: MLB's collective bargaining agreement expires, and a lockout is likely.
Season Trajectory
Tseng's availability comes under MLB's posting agreement with the CPBL, which sets fees that scale with contract size. The timing ties his free-agent window to the looming expiration of MLB's collective bargaining agreement on Dec. 1.
Teams with bullpen needs can now pursue Tseng within the posting window, and the fee schedule determines the cost of landing him. Fans tracking MLB free-agent signings should watch for a deal before the window closes on Dec. 22.
The takeaway
Tseng's posting shows how international pitchers with proven domestic results can reach MLB, with the posting fee structure shaping what teams pay. Watch the Dec. 22 deadline closely.
What happens next
Teams may sign Tseng as a free agent from Sunday until Dec. 22, and MLB's collective bargaining agreement expires on Dec. 1.
Further reading
For more on the league and players shaping the global game, explore our Baseball coverage.
