SEATTLE -- Mariners center fielder Julio Rodriguez, who was removed from the Mariners' game against the Los Angeles Angels on Thursday night after being struck by a ball in the back of the head, was placed on the seven-day injured list on Friday with a concussion.
In a corresponding move, the Mariners selected the contract of infielder/outfielder Miles Mastrobuoni from Triple-A Tacoma. Mastrobuoni was originally designated for assignment on June 19. He has appeared in eight games this season, hitting .217 with one RBI in 21 at-bats.
RodrÃguez was running from first to second on a ground ball in the first inning of Thursday's 1-0 win when first baseman Nolan Schanuel fielded it and tried to throw to second to start a double play. The throw struck Rodriguez on the helmet as he slid into the bag, and he hustled to third base after the ball bounced into the outfield.
"With head injuries, you have to be so careful," Mariners manager Dan Wilson said Friday. "Tough break, but we've been through it before."
Victor Robles started Friday night's game against the Toronto Blue Jays in center field. Robles replaced RodrÃguez in center field in the third inning of Thursday night's game.
A three-time All-Star, RodrÃguez played in a career-high 160 games last season. He had played in 87 games this season, hitting .259 with 15 doubles, 14 home runs, 40 RBI and 12 stolen bases.
The Associated Press contributed to this report.
