NEW YORK (Bloomberg) — Major League Baseball won't discipline New York Yankees designated hitter Jason Giambi for comments he made to USA Today about using steroids, Commissioner Bud Selig said in a statement.

Selig said Giambi's cooperation with former US Senator George Mitchell's investigation into use of the performance-enhancing drugs in the sport weighed in his decision.

"Jason was frank and candid with Senator Mitchell," Selig said in a news release. "That and his impressive charitable endeavours convinced me it was unnecessary to take further action."

Yankees spokesman Jason Zillo said the team had been informed of Selig's decision and had no further comment.

Giambi said in a May 18 article in USA Today that he was "wrong for doing that stuff," prompting Selig to ask him to meet with Mitchell. Giambi said players, owners and others involved in baseball should have apologised when discussions of steroids first surfaced.

Selig at the time said he wouldn't decide on disciplining Giambi until he decided whether to meet with Mitchell and how much he cooperated with the investigation.

On July 13, Giambi became the first active player to speak with Mitchell, whom Selig appointed in March 2006. The commissioner announced the meeting in a press release that provided no details other than who attended.

Selig also said in his news release today that he sent a letter to Giambi praising him for his commitments to off-field charitable activities, including a $50,000 donation to the Partnership For a Drug-Free America.