The Astros recalled Martinez from Triple-A Sugar Land on Saturday
With Tayler Scott (back) headed for the injured list, the Astros will call upon Martinez to fill the open spot in the bullpen. The 30-year-old righty has been solid in the majors this season, posting a 3.04 ERA and 1.21 WHIP through 50.1 innings. He'll most likely work in middle relief down the stretch.