Cardinals closer Luke Gregerson to begin season on DL

JUPITER, Fla. -- St. Louis closer Luke Gregerson will begin the season on the disabled list with a hamstring strain, manager Mike Matheny said on Saturday.

Gregerson injured the hamstring during conditioning drills. He hasn't pitched in a Grapefruit League game since Tuesday, when he struck out two in an inning. There is no announced timetable for his return.

The Cardinals signed Gregerson during the offseason to be their closer. He saved 31 games for Houston in 2015 and 15 more the following season.

Earlier this spring, Gregerson missed time because of oblique tightness. Matheny said he didn't believe that the two issues were related.

Without Gregerson, Matheny intends to select his closer on a game-by-game basis based on matchups. Righties Dominic Leone and Bud Norris, along with lefty Tyler Lyons, figure to be in the mix.