Miami Marlins

Marlins pitcher Tom Koehler allowed a leadoff home run to Gerardo Parra but suffered a tough-luck 1-0 loss Saturday night against the Diamondbacks.

Koehler (0-2), who made his second start of the season, held the Diamonbacks to three hits over six innings. He struck out seven and walked two.

Koehler has allowed three runs over 11 innings since joining the starting rotation. He has struck out eight and walked three over that span. He is scheduled to make his next start Friday at the White Sox.

The Marlins signed infielder Gil Valazquez to a minor-league contract Saturday, assigning him to Triple-A New Orleans, according to The Sun Sentinel. Velazquez had a .232/.246/.250 slash line in 19 games last season for the Marlins.

Marlins outfielder Giancarlo Stanton, on the 15-day disabled list with a strained right hamstring, could begin jogging next week, according to manager Mike Redmond.

Stanton has been limited to aquatic workouts since the injury. He has been sidelined with a strained hamstring since April 29. He hit .227 with three homers and nine RBI before the injury. The team has not issued a timetable for his return.

The Marlins have purchased the contract of pitcher Duane Below Friday.

Below went 2-2 with a 3.38 ERA in four starts at Triple-A New Orleans. The left-hander went 1-2 with a 2.10 ERA in four starts at Triple-A Toledo before he was claimed by the Marlins on April 25.

The Marlins have designated pitcher Jon Rauch for assignment following Friday's game against Arizona.

Rauch allowed two runs and four hits in one inning of work against the Diamondbacks. His ERA rose from 6.89 to 7.56. He allowed 14 runs over 16 2/3 innings of work in the majors.