The MLB Commissioner's Office has announced this afternoon that Oakland Athletics starting pitcher Bartolo Colon has been suspended 50 games for a positive drug test, which showed an elevated level of testosterone. The suspension is effective immediately, which means he will miss the remainder of the regular season.

Colon was having a decent season for the Athletics, producing a 10-9 record with a 3.43 ERA. The former Cy Young Award winner was an integral part of the Yankees' success in the first half of the 2011 season, when he went 6-4 with a 3.20 ERA in the first three months, before falling off with a 2-6 record and an ERA near five after the All-Star Break.

Oakland is currently sitting with a 66-56 record, just five games behind the Texas Rangers for the lead in the AL West and only a half-game behind Baltimore for the second AL Wild Card spot.