Cubs outfielder Tyer Colvin, whose chest cavity was punctured by a broken bat Sunday, was released today from Jackson Memorial Hospital in Miami, the team announced.

Colvin was treated for two days with a tube in his chest to prevent a collapsed lung after being impaled by the snapped-off head of teammate Welington Castillo's maple bat while running from third base to home during Sunday's game against the Florida Marlins.

It was not immediate known when Colvin might return to the team. He was officially placed on the disabled list Tuesday and will not play again this season.

The incident was just the latest -- and most serious -- involving the more brittle maple bats, which tend to snap or ``explode'' when breaking instead of splintering like the more traditional ash.