WEST PALM BEACH, Fla. — The Astros made a $54 million bet on Tatsuya Imai this winter. On Monday, Houston fans get their first look at what that investment might return.
Imai is scheduled to make his Daikin Park debut in an exhibition matchup against Triple-A Sugar Land, manager Joe Espada confirmed. It will be his fourth spring appearance and his most telling—the final tune-up before the Astros open the regular season March 26 against the Los Angeles Angels.
The early returns have been encouraging, if limited. Imai has yet to allow a run this spring, giving up just two hits and one walk over six innings while striking out seven. The results are clean. The workload is not. He has been held to roughly two innings per outing as the Astros carefully manage his transition from Nippon Professional Baseball, where he posted a 1.92 ERA last season and earned multiple All-Star selections.
That cautious buildup has been by design. His first appearance—one inning on just 10 pitches against the Mets—drew attention, but Houston has consistently pointed to his once-a-week routine in Japan as the model they are following. The leash is starting to lengthen. Imai threw 51 pitches in a simulated game earlier this week and will take the mound Monday on five days’ rest, a step closer to a traditional starter’s workload.
He’ll need to get there quickly. Framber Valdez’s departure left a significant innings gap in the rotation. Hunter Brown anchors the staff, but the Astros didn’t commit three years and $54 million guaranteed to Imai to be a curiosity. He was brought in to stabilize the rotation behind Brown, a role that becomes even more important with a bullpen already dealing with injuries to Josh Hader and Bennett Sousa.
The schedule only adds urgency. Houston opens the season with 21 games in 22 days, a stretch that has prompted plans for a six-man rotation. That setup gives Imai additional recovery time, but it also increases the importance of length from every starter. Short outings won’t hold up over that kind of stretch.
Imai’s regular-season debut is expected to come during the opening weekend. Monday’s outing at Daikin Park is his last opportunity to show he can bridge the gap between promise and workload. The results have been there. Now the Astros need to see the innings.
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