Overview
- Houston selected right-hander Peter Lambert on Friday to start against St. Louis and optioned Christian Roa to Triple-A Sugar Land.
- The club transferred Josh Hader to the 60-day injured list, retroactive to his earlier 15-day stint for biceps tendinitis, which makes a late May return possible.
- A 60-day IL move frees a spot on the 40-man roster and indicates a longer buildup, even for a reliever who only just faced hitters in live batting practice.
- Houston's rotation depth has been drained by recent injuries to Hunter Brown, Cristian Javier, Tatsuya Imai and Cody Bolton.
- Lambert, a former Rockies prospect who pitched in Japan with the Yakult Swallows in 2025, has allowed three earned runs with 12 strikeouts in 14 2/3 Triple-A innings this year with a strong ground-ball profile.