The Astros have released Brad Thompson according to Matt Eddy of Baseball America and this week's edition of minor league transactions.
Houston signed Thompson back in June after he chose to become a free agent when the Royals designated him for assignment. The 28-year-old righthander appeared in 15 games for the Astros' Triple-A affiliate, posting an 8.87 ERA with a 1.93 WHIP in 23.1 innings. He struck out 12 and walked four.
