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 has been removed from the game Saturday after colliding with Andrew Pullin in the outfield, Matt Gelb of The Athletic Philadelphia reports.

Middlebrooks signed a minor-league contract that includes an invitation to spring training with Philadelphia on Wednesday.

Middlebrooks declined his outright assignment and is now a free agent.

Middlebrooks started at third base and went 1-for-4 in Monday's 11-2 loss to the Astros.

Middlebrooks struck out in his pinch-hitting appearance during the Rangers' 8-1 loss to the Mariners on Wednesday.

Middlebrooks was called up by the Rangers on Friday, Jeff Wilson of the Fort Worth Star-Telegram reports.

Middlebrooks (hand) is back in action for Triple-A Round Rock, and has home runs in each of his first two games since coming off the DL on Thursday.