Astros designated RHP Nate Pearson for assignment.
The 29-year-old right-hander pitched decently in 16 appearances for the Astros this season, posting a 3.60 ERA, 1.40 WHIP and a 16/12 K/BB ratio over 20 innings. He flashed enough during that stretch that he could generate some interest on waivers from bullpen-needy clubs.