Riley O'Brien

O'Brien (calf) is competing to serve as St. Louis' closer this season. A minor calf strain has delayed his spring progression.

Fantasy Impact

He completed a live batting practice session on Monday without issues, though wet mound conditions affected his footing. Another live batting practice session is scheduled for Thursday, this time with a shorter workload before hitters. O'Brien hopes to make his Grapefruit League debut on Saturday. He is projected to have sufficient time to prepare for Opening Day.

O'Brien (calf) is vying to open the season as St. Louis' closer. A mild right calf strain has delayed his camp progression.

Fantasy Impact

He completed a live batting practice session on Monday without complications. O'Brien is tentatively scheduled to make his Grapefruit League debut Friday against Baltimore, pending a positive response from Monday's work.

O'Brien (calf) suffered a minor right calf strain one week ago. Tuesday's bullpen session will mark his initial mound work since sustaining the injury.

Fantasy Impact

The calf strain is projected to keep O'Brien from representing Team South Korea in the World Baseball Classic. Tuesday represents his return to throwing from the mound.

Cardinals reliever Riley O'Brien will miss the upcoming World Baseball Classic due to a calf injury.

Fantasy Impact

O'Brien has been nursing a sore calf the last couple of days in Cardinals spring training and was forced to withdraw from Team Korea at the WBC as a result. The 31-year-old posted a stout 2.06 ERA across 42 appearances for the Cardinals last season.

Riley O’Brien is dealing with a bit of calf soreness.

Fantasy Impact

It is possible the injury could impact O'Brien's availability to participate in the World Basebabll Classic. He had been slated to serve as the closer for Team South Korea.