According to Jon Morosi of Fox Sports, the Seattle Mariners have acquired RHP Chris Heston from the San Francisco Giants for a player to be named later. Heston, 28, couldn't stay healthy last year pitching in only four games, but the year prior started 31 games, including throwing a no-hitter in June.
With the Giants signing Mark Melancon, Heston simply had no spot in the rotation or the bullpen for the Giants. Jerry Dipoto made it very clear the Mariners were going after pitching to bolster a suspect rotation and bullpen, and Heston is a cheap way to do that.
The Giants are getting a PTBNL in return, leaving it up in the air who exactly they will be getting back. Given Heston's numbers, the return won't likely be substantial but could be a player to help the Giants in to the coming year.