Another rookie, reliever Edwards, promoted

ARLINGTON, Texas -- Before Friday's 7:05 p.m. start against the Los Angeles Angels at Globe Life Park, the Texas Rangers purchased the contract of 26-year-old right-handed reliever Jon Edwards from Triple-A Round Rock. If and when Edwards appears in a game, he'll be the 36th pitcher to take the mound for Texas this season.

The Rangers are closing in on the major-league record of 37 in that department set by the 2002 San Diego Padres.

Edwards in 34 combined relief appearances for Frisco and Round Rock this season compiled a 2-3 record and a 4.41 earned run average. In 49 innings, he has an impressive strikeout total of 62.

Manager Ron Washington's take on Edwards: "He doesn't have the real knowledge yet, but he has stuff."

To make way for Edwards, the Rangers optioned Thursday's left-handed starter Robbie Ross Jr. to Round Rock.

When Edwards gets into a game, he'll be the 18th Rangers rookie and the 57th overall player this season. The major-league record for players used in a season is 59 shared by three clubs, the 2002 Indians and the Padres in 2002 and 2008.

"It shows we've had injuries and had to go into our pitching sources," Washington said. "It has been an opportunity for a lot of people to show something."

Washington admits a few of those promoted are pitchers he is seeing for the first time this season.

"It gives us a chance to see what we have going forward and see how those guys handle it," Washington said. "What they gain is yet to be determined."

Roman Mendez and Phil Klein are two examples of midseason additions who have made the most of their opportunities. The Texas bullpen comes into Friday's game with 14 2/3 scoreless innings over the last three games.

With Ross' departure, the Rangers have penciled in Miles Mikolas and Nick Martinez to start in Miami on Tuesday and Wednesday, respectively.

Wash expects Darvish return: Washington said in his Friday media conference he is going under the assumption that Yu Darvish will return to the starting rotation on Aug. 25 in Seattle when he is scheduled for come off the 15-day disabled list (right elbow inflammation).

"We'll let the process work and see where it goes," Washington said.

Minor deal: The Rangers sent 32-year-old right-handed pitcher Justin Germano to the Los Angeles Dodgers on Friday in exchange for future considerations.

Germano got a brief look of 5 1/3 innings (11.81 ERA) with the Rangers this season. Most of his 2014 was spent at Round Rock, where had had a record of 4-13 with a 4.51 ERA in 21 starts.

Rios passes defensive test: Alex Rios passed a defensive test on his injured ankle Friday afternoon and will start in right field and bat fifth Friday.

"There's a little bit of pain, but nothing that will hurt my performance," Rios said. "It feels good enough to play. I'm optimistic that everything will be all right."

Rios served as designated hitter in starts Wednesday and Thursday against Tampa Bay, his first starts since aggravating a right ankle sprain on a slide at the plate in Sunday's 6-2 win at Houston.