ARLINGTON -- The Rangers set a Guinness World Record on Tuesday when fans at Rangers Ballpark wore sunglasses in the dark.

They only needed 424 to beat the previous record, so representatives from Guinness counted only sections 314 and 315. Despite that, most of the 33,533 in attendance wore the blue or red shades, which were provided by Reliant Energy.

That group included former President George W. Bush, a frequent spectator at Rangers games, who was flanked by club president Nolan Ryan. Both were seen wearing sunglasses when the scoreboard and PA announced that the project was starting after the sixth inning.

"I'm pleased to say that 424 people participated in this attempt," said Danny Girton Jr., senior corporate communications manager for Guinness. "There were a further unconfirmed 30,000 who helped Reliant Energy in this attempt."

For a record to be verified, it takes at least 10 minutes and 250 people to warrant being counted by Guinness.

Napoli takes cortisone shot in oblique

ARLINGTON -- Injured Rangers catcher Mike Napoli had a cortisone shot on Monday to combat pain in his strained left oblique. He hopes to ramp up his activity level on Wednesday.

Napoli went on the disabled list on June 12 with the ailment, and while he has caught bullpen sessions and worked out, he has yet to do any more strenuous swinging than from a tee.

"Before we make any plans, he's got to start swinging the bat," Rangers manager Ron Washington said. "We don't know when that will be. He's throwing, he's catching in the bullpen, but he hasn't gotten the chance to get in the cage and start swinging yet."

Napoli said he'll take a short break, then get back to rehabilitation exercises.

"I did some core stuff yesterday, some rotational stuff," Napoli said. "I did one-arm bat, top and bottom hands, and a couple swings with the short bat and two hands off the tee. I got a cortisone yesterday, so I'm going to take today off. We're going to go from there and see how I feel tomorrow."

Napoli said that the injury could have gotten worse had he not gone on the disabled list when he did.

"The pain is down to one sore spot. It is not as bad," Napoli said. "We caught it at the right time."

O'Day ready to ramp up recovery efforts

ARLINGTON -- Rangers reliever Darren O'Day will take a key step in his rehabilitation over the weekend when he pitches in back-to-back games for the Triple-A Round Rock Express on Friday and Saturday.

O'Day, who is on the 60-day disabled list with a torn labrum in his left hip, emphasized that he feels healthy. He tossed an inning Monday with Double-A Frisco before returning for a workout Tuesday.

"I did [pitchers' fielding practice] for about 15 minutes today and then Brandon Webb dropped out, so he left me alone with [pitching coach] Mike Maddux for about 10 minutes," O'Day said. "I got moving around a lot."

One of the main goals for O'Day during rehabilitation was to return his delivery to where it was before he started to overcompensate for the pain he had in his hip.

"In places the hip was affecting me, I felt a difference in my mechanics where I was getting back to stuff from before the hip started bothering me," O'Day said. "My hip doesn't hurt with every pitch and I can recover much better."

Because the Rangers have an off-day next Monday, O'Day, who is eligible to return from the DL Sunday, could realistically return to the club next Tuesday in Houston. First, though, he has to get through rehab assignments.

"I'd love to go to Houston, but I have to prove that I'm ready to come back," O'Day said. "I have to go down there and pitch good."

Rangers manager Ron Washington stressed that O'Day must prove he can not only pitch but get people out before he returns, just like any other rehabbing pitcher.

"He has to be able to get outs and be able to consistently be able to do what he does," Washington said. "He has to be able to go back-to-back days. Got to get him back to the point where he can go three out of five, four out of five. When he can do that, he's ready to come back."

Fatigued Torrealba gets another day to rest

ARLINGTON -- Rangers catcher Yorvit Torrealba was given another day to rest by manager Ron Washington on Tuesday, keeping him out of the lineup against the Astros.

Washington felt that after catching 10 innings on Saturday and starting the game Sunday, Torrealba's body could not handle catching on Monday. In light of that, he felt another day off Tuesday was appropriate.

"Just another precaution," Washington said. "I want to make sure that I give him time to recover. I certainly can't afford to lose him, and one more day isn't going to hurt, so I decided to just give him one more day."

With Torrealba temporarily sidelined and Mike Napoli on the disabled list with an oblique injury, Taylor Teagarden was in the lineup and behind the plate.

"[Torrealba] looked dehydrated. He looked like he was cramping up," Washington said. "I thought it was more than that, but that's all it was. It was a rough day, it really was. Especially after the night before. Your body will let you know when its ready to shut down, and I just want to make sure he's in good shape."

Washington said Torrealba would definitely return to the lineup on Wednesday.