Gallen expects to be available out of the bullpen Sunday against the Padres, Steve Gilbert of MLB.com reports.

Gallen (14-6) picked up the win over the Giants on Wednesday, allowing one run on two hits and two walks over six innings while striking out 11.

Gallen (13-6) picked up the win Friday, giving up four runs on seven hits -- including three home runs -- and a walk over five innings in a 7-4 victory over the Brewers. He struck out five.

Gallen did not factor into the decision in Sunday's win over the Brewers, allowing three runs on six hits and two walks while striking out seven over five innings.

Gallen (11-6) picked up the win over the Giants on Wednesday, allowing four walks and no hits over six shutout innings. He struck out eight.

Gallen (9-6) took the loss Saturday as the Diamondbacks were downed 6-1 by the Rays, giving up four runs on nine hits and two walks over five innings. He struck out three.

Gallen (cramps) has been cleared to start Saturday's game against the Rays at Tropicana Field.

Gallen (6-5) took the loss Tuesday against Atlanta, allowing five runs (four earned) on seven hits and a walk while striking out four over 5.1 innings.

Gallen did not factor into the decision in a win over the Dodgers on Thursday, allowing three runs on four hits and three walks over four innings. He struck out four.

The Diamondbacks reinstated Gallen (hamstring) from the 15-day injured list ahead of his start Saturday versus Oakland.