Needing a second catcher, the Rockies called up Michael McKenry from Triple-A Colorado Springs. Rosario remained on the active roster, with the Rockies optioning right-handed reliever Chad Bettis
But depending on the severity of his illness, Rosario could be a candidate to be placed on the DL on Sunday to make room for right-hander Jhoulys Chacin, who is expected to make his season debut. Chacin strained his right shoulder at the start of Spring Training.
Jordan Pacheco (.242 average, three RBIs) started at catcher Saturday night.
The season has been difficult health-wise for Rosario (.239, three homers, 15 RBIs). He has sat out in spots twice because of left wrist and hand injuries.
Thomas Harding is a reporter for MLB.com. Follow him on Twitter @harding_at_mlb. This story was not subject to the approval of Major League Baseball or its clubs.