Riley O'Brien Injury: On track for spring debut Friday
O'Brien (calf) is tentatively scheduled to make his Grapefruit League debut Friday against the Orioles, Derrick Goold of the St. Louis Post-Dispatch reports.
The right-hander has been slowed in Cardinals camp by a mild right calf strain. O'Brien got through a live batting practice session Monday with no issues, and as long as he bounces back well, he'll get into game action Friday. The hard-throwing O'Brien is competing to open the season as St. Louis' closer.
