OAKLAND -- In the midst of Oakland's transaction on Sunday that sent Matt Murton to Triple-A Sacramento and promoted Eric Patterson to The Show, manager Bob Geren was left with a predicament in the form of two lineups.

One had Patterson slated in the leadoff spot playing left field. The other was created without his name in the event he didn't make it to the ballpark in time.

"He should be here in 30 minutes and 14 seconds," Geren said with a smile in his office just under two hours before the A's took on the visiting Rangers.

Patterson was not seen on the field before the game, but when the starting lineups came out of the printers, there was his name right where Geren said it would be.

"I'm looking forward to meeting him and seeing him play," the skipper said.

Patterson was flying in from Round Rock, Texas, where Murton will join the River Cats on Monday for the third game of a four-game set. Murton, who joined the A's on July 11 following the six-player deal that sent Rich Harden to the Cubs, hit .100 (3-for-30) with two RBIs in nine games with Oakland.

"He needs to get some at-bats to get his swing back," Geren said of Murton. "His stroke is not on right now."

Before being sent to the Bay, the 26-year-old Murton was batting .250 with six RBIs in 19 games with the Cubs. He said the adjustment to a new team was made rather easy with the A's, so he believes his offensive woes can be attributed to other factors.

"I've proven I'm capable of being a Major League player," he said. "It's been a tough year. I haven't gotten as many at-bats as I'd like.

"For me, it's about doing what I've always done and getting consistent at-bats. This will be a good opportunity for me to see the ball more."

The at-bats Murton longs for is what Geren believes Patterson has already mastered at the Minor League level, where he was hitting .349 with three home runs and 12 RBIs in 14 games with Sacramento since being traded from the Cubs with Murton.

"[Patterson] was playing extremely well there," Geren said. "He has nothing left to prove."

The left-handed hitter also batted .237 with one home run and seven RBIs in 13 games over three stints with Chicago this year. And when speaking of his defense, Geren mentioned the 25-year-old Patterson has more experience in the infield, but the skipper expressed much confidence in outfield instructor Tye Waller.

"I'm very comfortable with our outfield coach in getting the very best of him," he said. "I've watched some video of him, and you could see talent in the outfield and all of his skills."