Young stud right-handers Sonny Gray and Julio Teheran will square off at Turner Field on Saturday for the middle of three games between the A's and Braves.
Gray, 24, has been one of the best pitchers in baseball for Oakland since the start of July. He had one dud on Aug. 6 against the Rays, but he bounced back in Kansas City on Monday with seven innings and two earned runs. Still, after winning six straight decisions, Gray has now dropped his last three.
After the rough outing two turns ago, there was perhaps reason to fear that Gray, in his first full season, might be tiring. But at 157 1/3 innings, he appears to be going strong.
"That's probably the best I've felt all year," Gray said after his last start. "It's a hard one to swallow. But I felt really, really, really good."
Meanwhile, the 23-year-old Teheran is coming off back-to-back rough outings. He allowed five runs to the Dodgers on Monday and six to the Mariners five days earlier, watching his ERA jump from 2.69 to 3.06 in August.
Against Los Angeles, Teheran allowed three singles and nothing more in the first five innings. But he watched five of the first six batters smack singles in the sixth, and a botched potential double-play ball didn't help matters.
"I don't want to call it bad luck," said Teheran. "That's part of the game. Those are situations I didn't face at the beginning of the game. I got a little bit in trouble and then I tried to get out of it and I couldn't."
Teheran has done his best work this year at Turner Field, where he is 4-2 with a 1.88 ERA.
A's: Lowrie goes on DL, Parrino recalled
Switch-hitter Andy Parrino joined the A's at Turner Field on Friday afternoon to take the place of Jed Lowrie, who was placed on the 15-day disabled list with a fractured right index finger.
Parrino found himself in the starting lineup as manager Bob Melvin sent a righty-heavy lineup out to face Braves left-hander Alex Wood.
"He's really been consistent all year and swinging the bat a lot better right-handed this year than we've seen in past years," Melvin said. "We saw that when he was up for a brief period last time he was here as well and swung the bat well right-handed, so therefore he's in there today."
Parrino also offers Oakland versatility in the field, with experience playing shortstop, left field, second base and third base in the Majors.
Braves: Upton starts Friday as hamstring improves
Left fielder Justin Upton was in manager Fredi Gonzalez's starting lineup on Friday after suffering a mild left hamstring strain against the Dodgers on Thursday afternoon.
If he'd had his way, Upton never would have left Thursday's game, but he exited in the eighth inning after pulling into third base.
"He's fine," said Gonzalez. "It's one of those things. He's had it before. It flairs up on him a little bit. I'm not a trainer, not a medical, but the weather's got something to do with it.
"But I checked with him this morning. He said, 'Fredi, I feel great. I felt like if I had enough time yesterday I probably could have stayed in the game.' I'm like, 'Son of a gun, you looked like you were hurtin'."
Upton looked to be in good health in the Braves' 7-2 victory, launching a solo homer, his 22nd, in the second inning.
• A's outfielder Craig Gentry, who has been on the disabled list with a broken right hand since July 28, will take batting practice with Triple-A Sacramento on Saturday.
• Braves shortstop Andrelton Simmons did not start on Friday because he needed dental work. He is expected back Saturday.
Aaron Leibowitz is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.