The Texas Rangers have placed right-handed reliever Matt Bush on the disabled list with a sprained knee a day after a hard collision with third baseman Joey Gallo during a play for a fly ball in the infield.
Both had been placed in MLB's concussion protocol Sunday and did not travel with the team to Anaheim, California, for a series against the Los Angeles Angels.
The Rangers replaced Bush and Gallo on the roster by calling up outfielder Ryan Rua from Triple-A Round Rock and right-handed reliever Nick Gardewine from Double-A Frisco.
Bush was initially diagnosed with a bruised right knee while Gallo suffered a bloody nose and swollen upper lip after they ran into each other while chasing an eighth-inning popup during a 3-2 loss to the Chicago White Sox.
Bush has thrown 47⅓ innings out of the bullpen for Texas, with a 3.04 ERA and 53 strikeouts.
Gallo is tied for second in the American League with 35 home runs while batting .205 for the Rangers.