MIAMI (AP) — Miami Marlins slugger Giancarlo Stanton has agreed to terms with the team on a $325 million, 13-year contract. Team owner Jeffrey Loria has confirmed the deal, the most lucrative for an American athlete.

The deal includes a no-trade clause, and Stanton can opt out after six years. A news conference was planned Wednesday.

The contract tops the $292 million, 10-year deal Miguel Cabrera agreed to with the Detroit Tigers in March. Alex Rodriguez signed the largest previous deal, a $275 million, 10-year contract with the Yankees before the 2008 season.

Stanton, 25, wasn’t due to become eligible for free agency until after the 2016 season.