Middlebrooks (lower leg) announced Thursday that he's retiring from baseball, Pete Abraham of The Boston Globe reports.

Middlebrooks (lower leg) was placed on the minor-league disabled list Friday.

Middlebrooks suffered a fractured left fibula during Saturday's spring training game, Meghan Montemurro of The Athletic Philadelphia reports.

Middlebrooks was removed from Saturday's game after colliding with Andrew Pullin in the outfield, Matt Gelb of The Athletic Philadelphia reports.