Twins place Trevor Plouffe on disabled list with concussion

The Minnesota Twins have placed Trevor Plouffe on the 7-day disabled list with concussion symptoms. Plouffe was kneed in the head by Dan Uggla while sliding into second base during the tenth inning of Tuesday night's game against the Braves.

Plouffe passed initial concussion tests, reports MLB.com. However, he still showed symptoms of a possible concussion and will undergo more testing on Friday.

Concussions can be very difficult, with symptoms occurring days, weeks, or even months after the initial contact. It is often tough to determine how long a player will be out of action. Some symptoms may never fully leave in extreme cases.

Plouffe, 26, broke out in 2012 with 24 home runs, though a .301 OBP left much to be desired. This season, he has hit four home runs with a .333 OBP as the Twins fulltime third baseman.

The Twins have purchased the contract of Chris Colabello to take Plouffe's spot on the roster. Colabello, 29, was a long time independent leaguer before signing with the Twins prior to the 2012 season. That year he posted an .836 OPS in Double-A. The Twins bumped Colabello up to Triple-A this year and he has hit very well with a .358/.417/.659 line.

Colabello has played mostly at first base in his career, though he has seen significant time at third base as well. The first time he gets into a game will be his major league debut.

To make room on the 40-man roster for Colabello, Darin Mastroianni was moved to the 60-day DL.