The Mets are interested in Japanese right-hander Tatsuya Imai, according to Andy Martino of SNY. Imai has not been officially posted yet, but his team, the Saitama Seibu Lions of NPB, recently announced that they intend to do so. Martino notes that the Mets’ level of interest is not the same as it was for Yoshinobu Yamamoto two offseasons ago, implying that Imai is simply one of several arms the club is looking into.
Imai, 27, has pitched for the Lions for eight years and is a three-time NPB All-Star. After middling results in his first three seasons from 2018-20, he pitched to a 3.30 ERA in 25 starts in 2021 and has posted a sub-3.00 ERA in every full season since (he only made nine starts in 2022). This year, Imai turned in a career-best effort with a 1.92 ERA in 163 2/3 innings across 24 starts. He also set a career high with a 27.8% strikeout rate while decreasing his walk rate to a career-low 7.0%. His season was highlighted by a combined no-hitter on April 18, in which he pitched the first eight innings, as well as a 17-strikeout performance on June 17 that broke the club record previously set by Daisuke Matsuzaka.
The NPB requires players to have nine years of service time before they become unrestricted free agents. By allowing Imai to pursue a move to MLB one year early, the Lions will secure a posting fee based on the value of his contract. We at MLBTR project Imai for a six-year, $150MM contract and placed him seventh on our Top 50 Free Agents list. Based on that projection, any signing team would owe the Lions a $24.375MM posting fee. In terms of stuff, Imai boasts a 95-99 mph fastball as well as a slider and changeup. Based on that profile and his recent track record, he’ll be an intriguing target for clubs in need of starting pitching. That said, Martino notes that industry opinion is mixed on whether he can succeed as an MLB starter.
As for the Mets, it comes as no surprise that they would like to reinforce their rotation. The club’s starters ranked 18th in the majors with a 4.13 ERA in 2025, although they did lead the league with a 49.4% groundball rate. David Peterson, Clay Holmes, and Kodai Senga led the team in innings pitched, although Senga only made 22 starts due to missing a month with a right hamstring strain and being optioned to the minors in September. Peterson was worth 3.1 fWAR this year and is projected to earn $7.6MM in arbitration, while Holmes is under contract for $13MM with a player option for 2027. Beyond those three, the rotation picture is less certain. Frankie Montas declined to opt out of his contract, but he is a candidate to be released since he will miss next season recovering from a UCL surgery in August. Sean Manaea missed most of the season with a right oblique strain and struggled upon his return. Nolan McLean, Brandon Sproat, and Jonah Tong all debuted in 2025 and will factor into the rotation, though owner Steve Cohen has never been shy about spending big on free agents. Signing Imai could provide stability in the rotation behind Peterson, Holmes, and Senga while easing the rookies into larger roles.





