All the A's right-hander will have to do in Wednesday's series finale against the Angels is look at the man pitching opposite him.
Jered Weaver (6-1, 2.80 ERA) had one of the worst starts of his career against Texas, giving up eight runs in 3 1/3 innings, only to respond by allowing just two runs on three hits in seven innings his last time out.
"It's easy to turn the page," the Angels ace said after his last start. "If you worry about it and think about it, you're going to get yourself into some trouble leading into that next start."
Turning the page is exactly what the rookie Parker will have to do after he allowing six runs with four walks in two innings against the Giants. In each of his other four starts, Parker, who is 1-2 with a 3.90 ERA, didn't allow more than two runs.
He gets the ball in the series' rubber match Wednesday, after the Angels won Tuesday night's game by holding the A's to one hit in a 5-0 victory. For the A's, Kurt Suzuki, Josh Reddick and Jemile Weeks, all of whom received a scheduled day off Tuesday, are expected back in the lineup.
The A's have played the Angels tough this season, holding a 5-3 mark in games between the two clubs. Oakland manager Bob Melvin said he expects the slumping Halos to catch fire eventually, but he just hopes it isn't against his club.
"It evens out over the course of the season," Melvin said. "Certainly they're probably not playing at their best right now, and I know they expect to play a lot better, and everyone in baseball expects them to play a lot better. Hopefully they stay down a little bit for the next couple of days, but that's a club that everybody expects to play a lot better."
Angels: Pujols says 'Keep pushing'
Albert Pujols launched his fourth home run of the season on Tuesday night, which gave the Angels a 4-0 lead.
Before the game, Pujols talked about fighting through the tough times as a club. He then backed it up.
"We just need to keep pushing and keep fighting and keep getting yourself ready to play every day. That's all you can do. There's nothing else you can do. If you had a magic ball, everything would be different. But you don't. You just have to come ready to play every day and do whatever it takes and leave everything on the field. Obviously, it's frustrating some times, but when you're winning it's great, too."
Mark Trumbo is batting .408 with two homers and seven RBIs over the past 13 games.
Since he was acquired from the Padres on May 3, Ernesto Frieri has not allowed a hit in 7 2/3 innings spanning eight relief appearances with the Angels.
A's: Cespedes progressing
A's rookie center fielder Yoenis Cespedes made significant progress Tuesday in his rehab from his strained left hand muscle. Cespedes took swings with fungo bats for the first time since being placed on the DL on May 7 and said he felt no discomfort.
"Over the last 48 to 72 hours, he's probably made the most progress that we've seen out of him, in regards to how he's feeling, his strength [and] his ability to do certain provocative tests without any discomfort," head trainer Nick Paparesta said.
There is still no timetable for Cespedes' return.
The A's have a 6-2 mark in one-run games this season, their last such victory coming over the Angels on Monday.
In 46 career at-bats against Weaver, Suzuki is hitting .326 with a homer, five doubles and five RBIs. None of the other three A's with 10 or more at-bats against Weaver are hitting above .200.
In 21 career starts against Oakland, Weaver is 7-7 with a 2.71 ERA.
The A's and Angels have been the two most likely offenses to be shut out this season. Oakland has been blanked seven times, trailing only the Angels' eight.