PEORIA, Ariz. -- The Spring Training goal for Phil Humber remains the same as it did back on February 17: break camp with the White Sox.

Even with Jake Peavy temporarily shut down due to discomfort from rotator cuff tendinitis and Humber sliding into his Thursday start, that focus hasn't changed.

"I'm starting Thursday and that's the only thing I can worry about right now," Humber said. "I can't worry about when Jake is coming back or this or that. Every opportunity you get, you have to run with it. Hopefully I've shown them enough for them to have confidence in me. I know I have confidence in myself.

"There's no more pressure. I'm trying to make a good impression every time I'm out there. There's still work to be done and I'm not taking anything for granted. I'm trying to go out there and earn it every day."

Humber talked Sunday with pitching coach Don Cooper, who laid out the current scenario for the right-hander. With Peavy almost certain to start the 2011 regular season on the disabled list, the fifth-starter's job is there for the taking for Humber.

A strong Spring Training by Humber has been enhanced by the development of a cutter. Cooper discussed with Humber adding the pitch during the offseason, and Humber seems most satisfied by the consistency of the pitch as opposed to being able to find success on one or two offerings.

"It has definitely been huge for me, being able to put more movement on my fastball," Humber said. "I've gotten a lot of easy outs on it. When you get in tough counts, it's nice to have something to throw in there that stays off the fat part of the bat. That's what it has been for me."

The game Thursday will be nationally televised and is against the Cubs, but the pressure isn't any different for Humber as compared to any other outing this spring.

"That will be good for the people back in East Texas," said Humber of the ESPN telecast reaching his hometown of Carthage, Texas. "They can watch me a bit. And it's against the Cubs, so I'm sure there will be a lot of people there. It will be fun."

Buehrle's start moved to Tuesday

PEORIA, Ariz. -- Mark Buehrle's scheduled start for Monday night against the Padres was moved to a Tuesday Minor League game against the Reds in Goodyear because, as White Sox pitching coach Don Cooper said, the White Sox "want to protect their top prospect."

In all seriousness, Buehrle's move was brought about by Monday afternoon rain and a forecast for inclement weather that night.

"It's just because I don't want Buehrle to start a game, then it starts raining and we have to shut it down," said White Sox manager Ozzie Guillen of his Opening Day starter. "We're better off protecting ourselves to make sure he can do what he's supposed to do."

With Buehrle moving to Tuesday, he could come back on three days' rest Saturday to throw a few innings against Cactus League competition to get ready for his franchise-record ninth Opening Day start on April 1 in Cleveland. Or he could stay on his regular four days' rest for Sunday and throw in a Minor League game once again.

Teahen makes right field debut

PEORIA, Ariz. -- One primary accomplishment has been set by Mark Teahen for his debut in right field during the White Sox Tuesday afternoon game against the Mariners in Peoria.

"Catch most of the ones hit that way," said Teahen with a laugh. "It's nice that I got a game in spring to do it, rather than do it on the fly during the season. I've played plenty of games out there, so I'm comfortable. I might not be completely polished for Game 1, but I'll figure it out."

Teahen made two slick defensive plays at third base during Monday night's game against the Padres and continues to work at third. He also took fly balls during Sunday workouts, and with Brent Morel apparently the 2011 starter at third, Teahen doesn't seem to need an official decision to be announced in order to figure out his role.

"They will decide what they decide, but all along I just wanted to do whatever makes us better," Teahen said. "I'll get at-bats and playing time and try to make the team better when I get that. I'm prepared for whatever they ask."

"We haven't decided that 100 percent," said Guillen of third base, adding if Morel makes the team, which he should, he will be starting. "But we told him to be aware if that's the way we're going to use [Teahen]."

More moves coming Tuesday

PEORIA, Ariz. -- When roster cuts are announced Tuesday, White Sox manager Ozzie Guillen figures his 2011 team will be pretty well set.

The position player battle remaining will be between Brent Lillibridge and Lastings Milledge for the last reserve-outfield spot, with both playing in Tuesday's outfield against the Mariners. There also will be competition for an apparent seventh relief spot, with Brian Bruney, Monday starter Jeff Marquez and possibly even Jeff Gray in contention.

Third to first

The White Sox projected starting rotation of Mark Buehrle, John Danks, Gavin Floyd, Edwin Jackson and Jake Peavy has combined to produce a 4-8 record with a 4.28 ERA in 20 Cactus League starts ... Danks ranks second in the Cactus League with his 1.65 ERA ... Carlos Quentin has 12 hits in his last 21 at-bats, with three doubles and three home runs ... Tyler Flowers has nine hits in his last 16 at-bats.