Richards was removed after the fourth inning of Sunday's 9-6 win over the Rangers due to cramping and dehydration, Alden Gonzalez of MLB.com reports.
Richards held Texas to one run through the first three innings, then gave up three unearned runs in the fourth. He was removed after just 79 pitches, but Angels manager Mike Scioscia said the right-hander wasn't injured. Richards has already surrendered seven unearned runs this season, which partially explains why he's 1-3 despite carrying a 2.34 ERA. His next start is scheduled for Friday against the Rays.