SEATTLE (AP) — The Seattle Mariners placed shortstop J.P. Crawford on the 7-day concussion injured list on Friday, a blow for the playoff-contending club as it opens a weekend series against AL-best Baltimore.

Crawford collided with third baseman Eugenio Suárez as both went for a ground ball in the fourth inning of Seattle’s victory on San Diego on Wednesday. Crawford was shaken up and remained in after discussions with athletic trainers and manger Scott Servais, but was lifted later in the game after feeling the effects of the collision.

The move was retroactive to Thursday.

Crawford is enjoying the best season of his career at the plate, batting .266 with 10 homers and 38 RBIs while hitting in the leadoff spot for most of the year. With Crawford out, Julio Rodríguez batted leadoff on Friday night and Dylan Moore played shortstop.

Seattle recalled utility player Sam Haggerty from Triple-A Tacoma to take Crawford’s roster spot. Haggerty was hitting .319 in 42 games with Tacoma. He appeared in 24 games with Seattle earlier in the season and hit .190.

The Mariners entered Friday trailing the Toronto Blue Jays by 1 1/2 games for the final AL wild-card spot.

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