Astros Minor League Snapshot: Pitching Standouts

Checking in on the Astros minor league pitching standouts for the season to date (ERA 3.00 or under and WHIP under 1.200):

STARTERS
RHP Chris Devenski: 0.53 ERA  0.882 WHIP  34IP
RHP Lance McCullers: 0.62 ERA  0.897 WHIP  29IP
RHP Daniel Mengden: 1.07 ERA  1.010 WHIP 33.2IP
RHP Joe Musgrove: 1.30 ERA  1.010 WHIP 34.2IP
LHP Bryan Radziewski: 1.41 ERA  0.969 WHIP 32IP
LHP Brian Holmes: 2.37 ERA  0.923 WHIP 30.1IP
RHP Austin Chrismon: 2.65 ERA  1.147 WHIP 34IP

RELIEVERS (minimum 15IP)
RHP Keegan Yuhl: 0.93 ERA  0.879 WHIP 19.1IP
RHP Ryan Thompson: 1.40 ERA  0.983 WHIP 19.1IP
RHP Travis Ballew: 1.47 ERA  0.927 WHIP 18.1IP
LHP Chris Cotton: 1.54 ERA  1.071 WHIP 23.1IP
RHP Jandel Gustave: 2.25 ERA  1.062 WHIP 16.1IP
RHP Richard Rodriguez: 2.25 ERA  0.893 WHIP 28IP
RHP Tyson Perez: 2.50 ERA  0.778 WHIP 18IP
LHP Albert Minnis: 3.00 ERA  0.867 WHIP 15IP

Also of note: LHP Reymin Guduan joined the Quad Cities team late and doesn't have enough innings to qualify for this list, but he has done extremely well in his first five outings: 0.82 ERA and 0.818 WHIP in 11 innings.