ARLINGTON -- Right-handed pitcher Darren O'Day will pitch for Triple-A Round Rock on medical rehabilitation assignment on Monday. It will be his fourth outing for Round Rock, and it could be his last.

O'Day has pitched three scoreless innings in his last three outings. He has allowed one hit and one walk while striking out five. Pitching for the second straight day, O'Day struck out the side in order on Saturday. There appears to be little left to prove in the Minor Leagues, and he could be activated during the Rangers' three-game series with the Astros that begins Tuesday in Houston.

"We'll see how [Monday] goes and make a call after that," manager Ron Washington said.

O'Day has been sidelined for two months after undergoing surgery on April 28 to repair a torn labrum in his left hip. O'Day was 0-1 with a 2.45 ERA before having the surgery, and he has a 1.94 ERA in 140 relief appearances over the previous two seasons.

"Yes, we miss him ... he's a big part of our bullpen," Washington said. "The hip has not been a problem. It's just getting into pitching shape, consistently doing what he wants to do with the baseball, and field his position."

Hamilton gets day off for series finale

ARLINGTON -- Rangers outfielder Josh Hamilton was out of the lineup on Sunday, one day after going 0-for-4 with four strikeouts in a 14-5 loss to the Mets.

Hamilton is now hitting .113 (6-for-52) with no home runs, four RBIs and 21 strikeouts in day games this season. But manager Ron Washington said that's not why Hamilton was out of the lineup Sunday.

"He looks tired. ... He just looks physically tired to me," Washington said.

Hamilton said he and Washington talked about taking Sunday off a few days ago. The Rangers are off on Monday before opening a three-game series against the Astros on Tuesday in Houston.

"I could use a day off, and piggyback it with the actual day off," Hamilton said. "It will be good for me."

The upcoming schedule appears good for Hamilton as well. Beginning Tuesday, the Rangers play 12 straight night games before a Sunday afternoon day game on July 10 against the Athletics. That's the Rangers' last game before the All-Star break.

The Rangers also open the second half by playing 12 of 14 games at night. But the Rangers aren't planning to protect Hamilton the rest of the way by playing him only at night.

"He's not going to get all day games off," Washington said. "I don't know what he sees or what he doesn't see. But if you play in a game, you may not get a hit, but you can do other things. You can play defense. You can walk and run the bases, break up a double play."

Hamilton is hitting .377 with seven home runs and 33 RBIs in 26 night games. He tried using contacts on Saturday, but that didn't work. The biggest concern is that he may be talking his way into a day-game slump.

"I'll figure it out, just like I always do," Hamilton said.

Hamilton went into Sunday's game with 22 RBIs for the month of June, third most in the Major Leagues.

Rangers discussing Ogando options

ARLINGTON -- The Rangers plan to discuss various options with pitcher Alexi Ogando. Right now, manager Ron Washington said the Rangers are planning on him making his next start on Friday against the Marlins.

The club could push Ogando back to Saturday to give him an extra day of rest. The Rangers could also skip him in the rotation and let David Bush make a spot start.

"We're certainly discussing a lot of things," Washington said. "We haven't put any plan in place yet. Right now, he's going to get his next start."

Ogando switched from the bullpen to the rotation this season, and was 7-0 with a 2.10 ERA in his first 12 starts. He is 0-3 with a 9.31 ERA in his last three starts. Washington said one option not being discussed is moving Ogando back to the bullpen.

He may get extra rest, but the Rangers, at this time, intend to keep Ogando in the rotation.

"It doesn't have anything to do with the bullpen," Washington said. "We have a few days to come together on something."

Andrus doubtful for Houston series

ARLINGTON -- Shortstop Elvis Andrus was out of the lineup again Sunday with a sprained left wrist, and he said he is not sure if he'll be ready for the three-game series against the Astros that begins on Tuesday in Houston.

"I don't know ... I don't think so," Andrus said. "It's going to be a few days."

Andrus said there is still some stiffness in the wrist, and he is concerned about how it might impact his swing.

"I have to be 100 percent to go back," Andrus said. "I don't want to be feeling something in the wrist and it changes my swing. If I have to take a few days off and get it right, I will."

Andres Blanco started at shortstop on Sunday for the second straight day and will do so again in Houston if Andrus is not ready. Manager Ron Washington said there are no plans to use Michael Young at shortstop in Houston even though the Rangers will be without the designated hitter.

"Blanco is my shortstop if Elvis is not playing," Washington said.

Worth noting

• Catcher Mike Napoli, on the disabled list with a strained left oblique muscle, is taking batting practice, feeling good and hoping to go on medical rehabilitation assignment in the Minor Leagues on Thursday.

• Scott Feldman will start Friday for Triple-A Round Rock, and Brandon Webb starts Saturday. Round Rock is off on Thursday. Webb's regularly scheduled start falls on that day, so the Rangers are pushing him back two days so he can get an extra session in the bullpen.

• Going into Sunday, there had been an average of 10.61 runs and 2.89 home runs hit in games at Rangers Ballpark in Arlington. Both were the highest marks for any park in the Major Leagues.

• The Rangers allowed 14 runs without giving up a home run on Saturday. The last time that happened was June 13, 1998, against the Angels.