The Toronto Blue Jays placed Vladimir Guerrero Jr., a six-time All-Star, on the seven-day injured list on Saturday due to concussion symptoms. In response, outfielder Daz Cameron was called up from Triple-A Buffalo, while Lazaro Estrada, a right-hander, was designated for assignment to make space on the 40-man roster.

Additionally, on the same day, left-hander Ricky Tiedemann was recalled from Buffalo, and right-hander Chase Lee was sent down to Triple-A. Guerrero exited Friday’s game against the Yankees after a collision with rookie shortstop George Lombard Jr. during a play at third base in the sixth inning. Lombard attempted to jump over Guerrero but inadvertently struck his head with his knee and thigh, causing Guerrero’s helmet to come off. Although Guerrero managed to run home and score, he appeared disoriented after crossing the plate, leading to his substitution in the seventh inning by Charles McAdoo.

Following the game, manager John Schneider mentioned that Guerrero was experiencing a headache, a symptom that persisted into Saturday. Guerrero currently holds a batting average of .263 with seven home runs and 46 RBIs. Tiedemann, who has played in seven games across three minor league levels this season, holds a record of 0-1 with a 6.43 ERA.