Tatsuya Imai to Enter MLB Free Agency

The MLB free-agent market expands with the addition of a talented starting pitcher from Japan. According to Jon Heyman of The New York Post, the Saitama Seibu Lions will post ace right-hander Tatsuya Imai. Imai, a three-time NPB All-Star, recently finished the 2025 season with an impressive 1.92 ERA across 163.2 innings.

Standing at 5'11" and weighing 154 pounds, Imai is considered undersized for a major league starter. Despite a history of control issues, he showed significant improvement this past season, walking only 45 batters. With potentially four plus pitches, including a fastball that can reach up to 99 mph, Imai is poised to attract attention from MLB teams.

Projected Contract and Market Dynamics

MLB Trade Rumors estimates Imai could land a six-year contract worth $150 million, along with a posting fee that could reach tens of millions. Given the financial implications, not every team may be in pursuit of Imai, but several clubs are already speculating about his top landing spots.

Potential Destinations for Imai

The Arizona Diamondbacks, who are struggling with rotation depth and have a free agent hole left by Zac Gallen, could benefit from Imai's skills. However, their history with Japanese players is limited, and they may prioritize salary reductions this offseason.

The Baltimore Orioles might be ready to shake things up under Mike Elias. Following a lackluster performance from starters, they are expected to be aggressive in free agency and could view Imai as a versatile option in their rotation.

The San Diego Padres face significant rotation challenges with injuries to key players. Although they might be tempted to pursue Imai, financial constraints near the luxury tax threshold could make this move challenging.

For the Los Angeles Dodgers, while their rotation appears secure, they cannot be dismissed as potential players in the Imai sweepstakes. With a projected payroll room, they remain a formidable contender if they choose to bolster their staff further.

The Chicago Cubs, after releasing a capable starter, may look for Imai as a viable option to improve their struggling rotation.

The Toronto Blue Jays aim to build upon their recent playoff success and could see Imai as a valuable addition, provided they successfully re-sign Bo Bichette first.

The New York Yankees are also scouting Imai as they navigate their own pitching needs for 2026; however, they face challenges with other pressing roster gaps and finances.

The Boston Red Sox and New York Mets should not be excluded from the conversation, with both organizations needing to rethink their starting rotations and possibly prioritizing Imai in their efforts.

Finally, the San Francisco Giants are a potential fit too, though they will need to weigh financial implications against the prospect of adding a talented pitcher to a rotation that has struggled consistently in recent years.