The Boston Red Sox are reportedly interested in adding Pittsburgh Pirates starting pitcher Mitch Keller, although they have competition from other teams, per Noah Hiles of the Pittsburgh Post-Gazette.

The Red Sox have reportedly kicked the tires on trading for Pittsburgh Pirates starter Mitch Keller, as Boston looks to strengthen its starting rotation ahead of MLB's trade deadline on Thursday.

The starting pitching market is heating up, and the Boston Red Sox, New York Mets and New York Yankees all reportedly have their eye on a veteran starter.