The Astros have placed 27-year old righty starting pitcher Bud Norris on the 15-day disabled list, retroactive to June 13th due to a sprained left knee. Norris has pitched in 13 games (all starts) for the Astros so far this year and he is 5-4 with a 4.81 ERA and a 1.43 WHIP. The Astros have called up 24-year old lefty starting pitcher Dallas Keuchel to replace Norris in the starting rotation. Keuchel has started 13 games in AAA-ball this year for the Astros and he is 5-4 with a 4.26 ERA and a 1.26 WHIP. He has now pitched in 79 games (77 starts) in his first four years in the minors and he is 24-29 with a 3.85 ERA and a 1.25 WHIP.