{"id":111669,"date":"2026-01-05T15:34:52","date_gmt":"2026-01-05T20:34:52","guid":{"rendered":"https:\/\/lastwordonsports.com\/baseball\/?p=111669"},"modified":"2026-01-05T15:34:52","modified_gmt":"2026-01-05T20:34:52","slug":"how-tatsuya-imai-officially-stabilizes-the-astros-pitching-rotation","status":"publish","type":"post","link":"https:\/\/lastwordonsports.com\/baseball\/2026\/01\/05\/how-tatsuya-imai-officially-stabilizes-the-astros-pitching-rotation\/","title":{"rendered":"How Tatsuya Imai Officially Stabilizes the Astros Pitching Rotation"},"content":{"rendered":"<p>The Houston Astros got <a href=\"https:\/\/lastwordonsports.com\/baseball\/2026\/01\/01\/astros-land-japanese-starter-tatsuya-imai\/\" target=\"_self\">their big-name pitcher<\/a>. This was a big surprise move. It was expected that the Astros might have to trade to get a top-of-the-line starter, but Houston went a completely different route.<span class=\"Apple-converted-space\">\u00a0<\/span><\/p>\n<h3>How Tatsuya Imai Officially Stabilizes the Astros Pitching Rotation<\/h3>\n<p>In an unexpected development Thursday morning, the Astros signed Japanese starter <a  href=\"https:\/\/www.baseball-reference.com\/register\/player.fcgi?id=imai--000tat\" target=\"_blank\" target=\"_blank\" rel=\"noopener noreferrer\">Tatsuya Imai<\/a> to a <a href=\"https:\/\/lastwordonsports.com\/baseball\/2026\/01\/01\/astros-land-japanese-starter-tatsuya-imai\/\" target=\"_self\">three-year, $54 million deal<\/a> that could reach $63 million with incentives. Houston was honestly not a prominent name in the discussions for Imai, but this is a massive get for the Astros who found a way to secure one of Japan\u2019s top arms expected to make the MLB jump. Imai had plenty of options, but chose the Astros on a short-term, high average deal that includes opt-outs.<span class=\"Apple-converted-space\">\u00a0<\/span><\/p>\n<p>Imai was a three-time All-Star in the Nippon Professional Baseball league and emerged as their latest ace pitching talent. Houston has expanded its international focus in Japan and South Korea, following an earlier move of <a href=\"https:\/\/lastwordonsports.com\/baseball\/2025\/12\/24\/astros-adding-new-pitchers-astros\/\" target=\"_self\">signing right-hander Ryan Weiss<\/a> from Korea.<\/p>\n<h3>Tatsuya Imai: Astros Ace Potential<\/h3>\n<blockquote class=\"twitter-tweet\" data-dnt=\"true\">\n<p dir=\"ltr\" lang=\"en\">Welcome to H-Town, Tatsuya! \ud83e\udd18 <a  href=\"https:\/\/t.co\/w5BifRsdYs\" target=\"_blank\" rel=\"noopener noreferrer\">pic.twitter.com\/w5BifRsdYs<\/a><\/p>\n<p>\u2014 Houston Astros (@astros) <a  href=\"https:\/\/twitter.com\/astros\/status\/2007211765156003867?ref_src=twsrc%5Etfw\" target=\"_blank\" target=\"_blank\" rel=\"noopener noreferrer\">January 2, 2026<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p>The Astros made a big splash on New Year\u2019s Day and started 2026 by stabilizing their rotation. With Framber Valdez likely leaving, Houston needed a quality pitcher behind <a href=\"https:\/\/lastwordonsports.com\/baseball\/2025\/08\/15\/astros-hunter-brown-emerging-new-ace\/\" target=\"_self\">current ace Hunter Brown<\/a> and Imai fits that role.<span class=\"Apple-converted-space\">\u00a0<\/span><\/p>\n<p>There is no doubt now that Houston has what it takes to be successful at the top of their rotation. Brown and Imai are looking like quite a formidable one-two punch for the Astros.<span class=\"Apple-converted-space\">\u00a0<\/span><\/p>\n<p>Imai has pitched like an ace in Japan with a 2.18 ERA and 9.5 strikeouts per nine innings over the past three seasons. The 27-year-old has constantly been improving, and 2025 was the best year of his career. Imai went 10-5 and posted just a 1.92 ERA across 163.2 innings pitched with 178 strikeouts.<span class=\"Apple-converted-space\">\u00a0<\/span><\/p>\n<p>2024 was just as impressive with a career high 187 strikeouts over 173 innings. Imai also won 10 games and put up a 2.34 ERA. He was an All-Star in both of these seasons. Across eight seasons with the Saitama Seibu Lions, he compiled a 58\u201345 record, a 3.15 ERA, and 907 strikeouts in 963.2 innings.<\/p>\n<blockquote class=\"twitter-tweet\" data-dnt=\"true\">\n<p dir=\"ltr\" lang=\"es\">Tatsuya Imai, Houston Astro.<\/p>\n<p>\ud83c\udfa5: Pacific League TV <a  href=\"https:\/\/t.co\/n731c0ptKS\" target=\"_blank\" rel=\"noopener noreferrer\">pic.twitter.com\/n731c0ptKS<\/a><\/p>\n<p>\u2014 FOX Sports: MLB (@MLBONFOX) <a  href=\"https:\/\/twitter.com\/MLBONFOX\/status\/2006803510189240352?ref_src=twsrc%5Etfw\" target=\"_blank\" target=\"_blank\" rel=\"noopener noreferrer\">January 1, 2026<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<h3>Astros Rotation Likely Set<\/h3>\n<p>The Astros now feature significant depth in the starting pitching department, led by Brown and Imai.<span class=\"Apple-converted-space\">\u00a0<\/span><\/p>\n<p>\u201cWe feel pretty good about the rotation right now,\u201d general manager Dana Brown said.<span class=\"Apple-converted-space\">\u00a0<\/span><\/p>\n<p>Cristian Javier slots in as the likely third starter, who had a full offseason to further recover from his Tommy John surgery in 2024. Javier has long been a valuable member of the pitching staff and has come through in huge postseason games. He\u2019s a formidable third option when he\u2019s right.<span class=\"Apple-converted-space\">\u00a0<\/span><\/p>\n<p><a  href=\"https:\/\/www.baseball-reference.com\/players\/a\/arrigsp01.shtml\" target=\"_blank\" target=\"_blank\" rel=\"noopener noreferrer\">Spencer Arrighetti<\/a> rounds out the top four after battling injuries in 2025. He has turned into a reliable starting pitcher for the Astros with a strong variety of stuff. Brown, Imai, Javier, and Arrighetti are truly a top four that Houston can rely on.<span class=\"Apple-converted-space\">\u00a0<\/span><\/p>\n<p>The Astros are likely to go into a six-man rotation given the great depth they have at the position now. Houston recently acquired <a href=\"https:\/\/lastwordonsports.com\/baseball\/2025\/12\/20\/more-on-the-new-starting-pitcher-the-astros-got-in-3-team-trade\/\" target=\"_self\">Mike Burrows from the Pirates<\/a> in a three-team trade, sending top prospects <a  href=\"https:\/\/www.baseball-reference.com\/players\/m\/meltoja01.shtml\" target=\"_blank\" target=\"_blank\" rel=\"noopener noreferrer\">Jacob Melton<\/a> and <a  href=\"https:\/\/www.baseball-reference.com\/register\/player.fcgi?id=brito-000and\" target=\"_blank\" target=\"_blank\" rel=\"noopener noreferrer\">Anderson Brito<\/a> in return.<\/p>\n<p>Burrows was the young, controllable starter with potential the Astros were looking for and slides in nicely as the fifth starter. Houston will likely have a couple of options for a sixth starter in the rotation between <a  href=\"https:\/\/www.baseball-reference.com\/players\/m\/mcculla02.shtml\" target=\"_blank\" target=\"_blank\" rel=\"noopener noreferrer\">Lance McCullers Jr<\/a>. and <a  href=\"https:\/\/www.baseball-reference.com\/players\/f\/francjp01.shtml\" target=\"_blank\" target=\"_blank\" rel=\"noopener noreferrer\">J.P. France<\/a>.<span class=\"Apple-converted-space\">\u00a0<\/span><\/p>\n<p>Even <a  href=\"https:\/\/www.baseball-reference.com\/players\/a\/alexaja01.shtml\" target=\"_blank\" target=\"_blank\" rel=\"noopener noreferrer\">Jason Alexander<\/a> is another name in the mix. Having six starters at the beginning of the year is a major advantage, and the Astros could be having an excess of riches when <a  href=\"https:\/\/www.baseball-reference.com\/players\/b\/blancro01.shtml\" target=\"_blank\" target=\"_blank\" rel=\"noopener noreferrer\">Ronel Blanco<\/a> and <a  href=\"https:\/\/www.baseball-reference.com\/players\/w\/wesneha01.shtml\" target=\"_blank\" target=\"_blank\" rel=\"noopener noreferrer\">Hayden Wesneski<\/a> likely return from Tommy John surgery by late midseason.<span class=\"Apple-converted-space\">\u00a0<\/span><\/p>\n<h3>More on Imai<\/h3>\n<p><a  href=\"https:\/\/www.mlb.com\/news\/mlb-comparisons-for-tatsuya-imai\" target=\"_blank\" target=\"_blank\" rel=\"noopener noreferrer\">All the talent<\/a> is there for Imai to be a top-line starter in the big leagues. The durability to pitch with close to 1,000 innings in the NPB and well over 150 in 2025 shows he can go deep into games and be a reliable option. The right-hander has six kinds of pitches in his arsenal, but primarily uses his four-seam fastball, slider, and changeup.<span class=\"Apple-converted-space\">\u00a0<\/span><\/p>\n<p>While his average fastball velocity of 94.8 mph may not jump off the charts, being an average velo for a major league pitcher, Imai can turn up the heat and reach well into the high 97s-100 when needed. Imai uses his fastball 48% of the time, but also leans heavily on his slider at 33%. He boasts a 46% whiff rate on that slider. Imai\u2019s changeup is also quite effective, and primarily uses that against left-handed hitters with a 41% overall whiff rate.<span class=\"Apple-converted-space\">\u00a0<\/span><\/p>\n<p>Like many Japanese aces, the 5-foot-11 pitcher throws a splitter as part of his offspeed variety. Besides that, Imai uses the new-age \u201cVulcan\u201d changeup and curveball occasionally.<span class=\"Apple-converted-space\">\u00a0<\/span><\/p>\n<p>The Astros and their fanbase can now be much more confident in their pitching rotation thanks to this Japanese star taking his talents to Houston.<span class=\"Apple-converted-space\">\u00a0<\/span><\/p>\n<hr \/>\n<p>Top Image Credit: William Purnell-Imagn Images<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Houston Astros got their big-name pitcher. This was a big surprise move. It was expected that the Astros might have to trade to get a top-of-the-line starter, but Houston went a completely different route.\u00a0 How Tatsuya Imai Officially Stabilizes the Astros Pitching Rotation In an unexpected development Thursday morning, the Astros signed Japanese starter [&hellip;]<\/p>\n","protected":false},"author":5612,"featured_media":106469,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"no","_lmt_disable":"","sfio_featured_image":false,"sfio_embed_code":"","_ef_editorial_meta_date_first-draft-date":"","_ef_editorial_meta_paragraph_assignment":"","_ef_editorial_meta_checkbox_needs-photo":"1","_ef_editorial_meta_number_word-count":"","footnotes":""},"categories":[14,1071],"tags":[246,29149],"class_list":["post-111669","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-astros","category-mlb","tag-houston-astros","tag-tatsuya-imai"],"modified_by":"Matthew Nethercott, Site Editor","_links":{"self":[{"href":"https:\/\/lastwordonsports.com\/baseball\/wp-json\/wp\/v2\/posts\/111669","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lastwordonsports.com\/baseball\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lastwordonsports.com\/baseball\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lastwordonsports.com\/baseball\/wp-json\/wp\/v2\/users\/5612"}],"replies":[{"embeddable":true,"href":"https:\/\/lastwordonsports.com\/baseball\/wp-json\/wp\/v2\/comments?post=111669"}],"version-history":[{"count":3,"href":"https:\/\/lastwordonsports.com\/baseball\/wp-json\/wp\/v2\/posts\/111669\/revisions"}],"predecessor-version":[{"id":111677,"href":"https:\/\/lastwordonsports.com\/baseball\/wp-json\/wp\/v2\/posts\/111669\/revisions\/111677"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lastwordonsports.com\/baseball\/wp-json\/wp\/v2\/media\/106469"}],"wp:attachment":[{"href":"https:\/\/lastwordonsports.com\/baseball\/wp-json\/wp\/v2\/media?parent=111669"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lastwordonsports.com\/baseball\/wp-json\/wp\/v2\/categories?post=111669"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lastwordonsports.com\/baseball\/wp-json\/wp\/v2\/tags?post=111669"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}