The Mets, meanwhile, will try to end their six-game homestand with a victory. It would be just their second after losing two out of three to the Marlins earlier in the week.
Left-hander Jon Niese will be asked to be the Mets' stopper Sunday. He lost his previous start, Tuesday against the Marlins, after giving up four runs in the fourth inning. Niese acknowledged that big innings have been an ongoing problem for him.
"I made some pretty bad pitches," Niese said. "I hung my curveball on three consecutive guys, which really hurt me. That's been my Achilles' heel this year -- giving up those big innings."
Right-hander Ben Sheets will start for the Braves. Sheets has been rejuvenated since signing a Minor League contract at the start of July and joining their rotation after the All-Star break.
Sheets has excelled, going 4-1 with a 1.41 ERA in his first five starts since missing almost two years due to arm injuries. While Sheets looks a lot like the pitcher he was in Milwaukee when he made four All-Star teams from 2001-08, he wishes he still threw his fastball in the mid- to upper-90s.
"I've got a good curveball, but if it was coming off 95, it would be better," Sheets said. "God, I want 95. Where is that?"
If Sheets does rediscover his old fastball, it would not be good news for the Mets, who have already lost to the 34-year-old this year.
Braves: Bourn continues to set tone
Center fielder Michael Bourn went 3-for-5 with two runs in a 9-3 victory Saturday, improving his batting average in Atlanta wins to .324. He has scored 62 runs in the Braves' 66 victories.
The Braves improved to 42-13 in games that Bourn has at least one hit and scores one run.
Bourn is 4-for-10 with two walks in his career against Niese.
Mets: Edgin now the sole lefty in bullpen
When the Mets activated Johan Santana from the 15-day disabled list on Saturday, they cleared a roster spot by designating left-hander Garrett Olson for assignment.
The move left rookie Josh Edgin as the only left-hander in the bullpen. Edgin has appeared in 14 games since making his Major League debut July 13 against the Braves. He has a 3.38 ERA and has struck out 21 in 13 1/3 innings. While Braves third baseman Chipper Jones has gotten plenty of notoriety this season as he works his to the top of various all-time lists, his Mets counterpart is closing in on a few milestones of his own.
David Wright went 0-for-3 with an RBI in Saturday's 9-3 loss and is one RBI away from 800. He is also one home run shy of 200.
Wright is 4-for-11 with a home run in his career against Sheets.
The Braves have won seven straight games against the Mets and are going for their second consecutive series sweep Sunday. The Mets last beat the Braves on April 16.