{"id":677549,"date":"2026-04-17T10:48:32","date_gmt":"2026-04-17T10:48:32","guid":{"rendered":"https:\/\/www.rawchili.com\/mlb\/677549\/"},"modified":"2026-04-17T10:48:32","modified_gmt":"2026-04-17T10:48:32","slug":"astros-make-roster-move-with-ex-no-5-pitching-prospect","status":"publish","type":"post","link":"https:\/\/www.rawchili.com\/mlb\/677549\/","title":{"rendered":"Astros Make Roster Move With Ex-No. 5 Pitching Prospect"},"content":{"rendered":"<p>\t\t\t\t<img width=\"780\" height=\"439\" src=\"https:\/\/www.rawchili.com\/mlb\/wp-content\/uploads\/2026\/04\/astros-roster-move-ex-no-5-pitching-prospect.jpg\" class=\"attachment-featured-image size-featured-image wp-post-image\" alt=\"Astros pitcher Peter Lambert delivers against the Cardinals.\"   decoding=\"async\" fetchpriority=\"high\"\/>\t\t\t\t\t\t\t\t\t<\/p>\n<p>\t\t\t\t\t\t\t\tGetty\t\t\t\t\t\t\t<\/p>\n<p>Peter Lambert of the Houston Astros will start Friday against the St. Louis Cardinals.<\/p>\n<p>The <a class=\"wpil_keyword_link\" href=\"https:\/\/heavy.com\/sports\/mlb\/houston-astros\/\" title=\"Houston Astros\" data-wpil-keyword-link=\"linked\" data-wpil-monitor-id=\"228685\" rel=\"nofollow noopener\" target=\"_blank\">Houston Astros<\/a> have burned through starting pitchers to open the season and have already lost four rotation pieces to the injured list. Before a three-game home series opener against the <a class=\"wpil_keyword_link\" href=\"https:\/\/heavy.com\/sports\/mlb\/st-louis-cardinals\/\" title=\"St. Louis Cardinals\" data-wpil-keyword-link=\"linked\" data-wpil-monitor-id=\"228684\" rel=\"nofollow noopener\" target=\"_blank\">St. Louis Cardinals<\/a> on Friday, they made another move. The Astros called up right-hander Peter Lambert for Friday\u2019s start vs. Cardinals, a former top-five pitching prospect in the Colorado Rockies\u2019 system, according to a report by <a href=\"https:\/\/www.mlbtraderumors.com\/2026\/04\/astros-to-select-peter-lambert.html\" target=\"_blank\" rel=\"noopener external nofollow\">Darragh McDonald of MLB Trade Rumors<\/a>.<\/p>\n<p>Lambert will start the series opener, making his first major league appearance for any team other than Colorado and his first big-league action since 2024. Lambert turns 29 on Saturday. A corresponding roster move is required. With multiple pitchers on the 15-day IL, Houston is expected to shift at least one to the 60-day IL to clear a 40-man roster spot.<\/p>\n<p>At his peak, Lambert was a legitimate prospect. He ranked as high as No. 5 in the Rockies\u2019 system heading into 2019 and had previously been rated their top pitching prospect, per <a href=\"https:\/\/www.baseballamerica.com\/players\/3217-peter-lambert\/\" target=\"_blank\" rel=\"noopener external nofollow\">Baseball America<\/a>. Evaluators credited him with the best control and best changeup in Colorado\u2019s farm system. He reached the majors by June 2019 and looked like he would stick at the big league level.<\/p>\n<p>\t\t\t\t<a href=\"https:\/\/heavy.com\/sports\/mlb\/houston-astros\/cody-bolton-injury-update-joe-espada-pitching-crisis\/\" rel=\"nofollow noopener\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" data-lazy-load=\"\" src=\"https:\/\/www.rawchili.com\/mlb\/wp-content\/uploads\/2026\/04\/cody-bolton-injury-update-joe-espada-pitching-crisis.jpg\" width=\"242\" height=\"161\" class=\"size-thumbnail\" alt=\"\"\/><\/a><\/p>\n<p>Lambert Spent Six Years Fighting Coors Field<\/p>\n<p>What followed was a career shaped as much by geography as ability. Lambert made 74 appearances for Colorado from 2019 to 2024, throwing 243 2\/3 innings with a 6.28 ERA. That bloated figure reflects the harsh reality of pitching at altitude, noted the <a class=\"wpil_keyword_link\" href=\"https:\/\/heavy.com\/sports\/mlb\/\" title=\"MLB\" data-wpil-keyword-link=\"linked\" data-wpil-monitor-id=\"228686\" rel=\"nofollow noopener\" target=\"_blank\">MLB<\/a> Trade Rumors report. The Rockies outrighted Lambert after the 2024 season, and rather than return to the minors with Colorado, the right-hander elected free agency.<\/p>\n<p>But Lambert did not stay in the major leagues. Instead, he signed with the Tokyo Yakult Swallows of Nippon Professional Baseball, logging 116 1\/3 innings over 21 starts with a 4.26 ERA. NPB\u2019s league-wide ERAs have been around 3.00 in recent years, MLB Trade Rumors reported.<\/p>\n<p>Houston signed him to a minor league deal in November. He opted out at camp\u2019s end, then re-signed rather than test free agency again. At Triple-A Sugar Land this season, he has posted a 1.84 ERA in three appearances with a 5.1% walk rate and a 53.7% ground-ball rate, according to stats posted by <a href=\"https:\/\/www.cbssports.com\/mlb\/news\/rhp-peter-lambert-joins-astros-for-series-opener-vs-cardinals\/\" target=\"_blank\" rel=\"noopener external nofollow\">CBS Sports<\/a>. His four-seamer has averaged 94.5 mph.<\/p>\n<p>\t\t\t\t<a href=\"https:\/\/heavy.com\/sports\/mlb\/houston-astros\/josh-hader-shoulder-capsule-strain\/\" rel=\"nofollow noopener\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" data-lazy-load=\"\" src=\"https:\/\/www.rawchili.com\/mlb\/wp-content\/uploads\/2026\/04\/Astros-Josh-Hader-Joe-Espada.jpg\" width=\"242\" height=\"161\" class=\"size-thumbnail\" alt=\"\"\/><\/a><\/p>\n<p>Astros\u2019 Rotation Crisis Left Houston Few Options Before Cardinals Opener<\/p>\n<p>Houston is not turning to Lambert by choice. Hunter Brown and Cristian Javier are on the IL with shoulder strains. Tatsuya Imai followed with arm fatigue. Cody Bolton joined them with back inflammation. Three-fifths of the Opening Day rotation evaporated, then a contingency starter went down, all during a 13-game stretch with no off day.<\/p>\n<p>Houston\u2019s pitchers have posted a minus-20.3 fastball runs above average, the worst in the majors, per Eric Cole of <a href=\"https:\/\/climbingtalshill.com\/astros-ongoing-pitching-problem-starts-with-one-brutal-truth-01kp3q7cjam7\" target=\"_blank\" rel=\"noopener external nofollow\">Climbing Tal\u2019s Hill<\/a>. Lambert\u2019s strong Triple-A ground-ball rate suggests his sinker approach could at least limit hard contact.<\/p>\n<p>The Cardinals arrive in Houston with momentum on their side. The Astros have lost <a href=\"https:\/\/www.espn.com\/mlb\/team\/schedule\/_\/name\/hou\/houston-astros\" rel=\"nofollow noopener\" target=\"_blank\">nine of their last 11<\/a>. The Cardinals, in what was supposed to be a rebuilding year, <a href=\"https:\/\/www.espn.com\/mlb\/team\/schedule\/_\/name\/stl\/st-louis-cardinals\" rel=\"nofollow noopener\" target=\"_blank\">come in at 10-8<\/a> with two straight wins.<\/p>\n<p>Cardinals outfielder Jordan Walker is tied for the MLB lead in home runs with eight. Rookie JJ Wetherholt has also been dangerous at the plate. Lambert\u2019s one career start against St. Louis ended with four runs over 4 1\/3 innings in August 2019. He will be looking to author a better script in his Astros debut.<\/p>\n<p>\t\t\t\t<a href=\"https:\/\/heavy.com\/sports\/mlb\/boston-red-sox\/patrick-halligan-steal-astros-pitching-pipeline\/\" rel=\"nofollow noopener\" target=\"_blank\"><img loading=\"lazy\" decoding=\"async\" data-lazy-load=\"\" src=\"https:\/\/www.rawchili.com\/mlb\/wp-content\/uploads\/2026\/04\/1776422912_571_Patrick-Halligan-Red-Sox-Astros.jpg\" width=\"242\" height=\"161\" class=\"size-thumbnail\" alt=\"\"\/><\/a><\/p>\n<p>\n\t\t\t<a href=\"https:\/\/heavy.com\/author\/jonathan-vankin-ejjyr\/\" rel=\"nofollow noopener\" target=\"_blank\">Jonathan Vankin<\/a> JONATHAN VANKIN is an award-winning journalist who covers MLB, NBA, NFL, NHL, boxing, golf, and Olympic sports for Heavy.com. He twice won New England Newspaper and Press Association awards for sports feature writing. He was a sports editor and writer at The Daily Yomiuri in Tokyo, Japan, covering the Olympics, pro baseball, boxing, sumo and other sports. <a href=\"https:\/\/heavy.com\/author\/jonathan-vankin-ejjyr\/\" rel=\"nofollow noopener\" target=\"_blank\">More about Jonathan Vankin<\/a>\t\t<\/p>\n<p>\n\t\t\tMore Heavy on Astros\n\t\t<\/p>\n<p>\n\t\t\t\tLoading more stories\n\t\t<\/p>\n","protected":false},"excerpt":{"rendered":"Getty Peter Lambert of the Houston Astros will start Friday against the St. Louis Cardinals. The Houston Astros&hellip;\n","protected":false},"author":2,"featured_media":677550,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2389],"tags":[42,5,139,54,3211,4],"class_list":{"0":"post-677549","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-houston-astros","8":"tag-astros","9":"tag-baseball","10":"tag-houston","11":"tag-houston-astros","12":"tag-houstonastros","13":"tag-mlb"},"share_on_mastodon":{"url":"https:\/\/channels.im\/@mlb\/116419659252503041","error":""},"_links":{"self":[{"href":"https:\/\/www.rawchili.com\/mlb\/wp-json\/wp\/v2\/posts\/677549","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.rawchili.com\/mlb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.rawchili.com\/mlb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.rawchili.com\/mlb\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.rawchili.com\/mlb\/wp-json\/wp\/v2\/comments?post=677549"}],"version-history":[{"count":0,"href":"https:\/\/www.rawchili.com\/mlb\/wp-json\/wp\/v2\/posts\/677549\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.rawchili.com\/mlb\/wp-json\/wp\/v2\/media\/677550"}],"wp:attachment":[{"href":"https:\/\/www.rawchili.com\/mlb\/wp-json\/wp\/v2\/media?parent=677549"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.rawchili.com\/mlb\/wp-json\/wp\/v2\/categories?post=677549"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.rawchili.com\/mlb\/wp-json\/wp\/v2\/tags?post=677549"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}