Center fielder Andruw Jones and starting pitcher John Smoltz shared the award, presented by Bank of America. Jones launched five home runs in six games, vaulting him past the Cubs' Derrek Lee for the Major League lead.
Jones has hit 12 home runs in June despite going homerless in the first 10 games of the month. Jones, who has 24 homers this season, hit a walk-off blast to defeat Baltimore on Saturday.
"Right there, in that situation, I was just trying to get a ball to drive [out of] the park," said Jones, who hit .450 for the week, with 11 RBIs. "I'm not trying to keep the game going. In my mind, I was just trying to hit the ball out of the park, and it happened."
For his part, Smoltz went 2-0, throwing two complete-game five-hitters. Smoltz shut out division rival Florida on Tuesday and followed that with a one-run effort against Interleague foe Baltimore on Sunday. With the pair of performances, Smoltz brought his ERA down to 2.74, good for fifth in the National League.
"Even in , I don't know if I threw this many games in a row like this," said Smoltz, who has gone 5-1 with a 2.50 ERA in six June starts, "I'm on the attack, and I'm not walking too many people."
"I think we've got two locks, Andruw and John," said Atlanta manager Bobby Cox of his team's potential All-Star selections.
Smoltz also delivered an RBI double in Atlanta's 8-1 win Sunday. Jones hit his fifth home run of the week in the contest as well.
Both players have stepped up while the Braves roster has been decimated by injuries. Third baseman Chipper Jones and starting pitchers Mike Hampton and Tim Hudson are all on the disabled list.
Other nominees include Lee -- who hit three home runs this week -- as well as his Cubs teammate, Aramis Ramirez, who collected three homers and 11 RBIs. In his only start of the week, Dontrelle Willis struck out seven and threw a shutout for Florida. The Cardinals' Chris Carpenter was 2-0 with an 0.53 ERA and 19 strikeouts. St. Louis had a league-high four players up for consideration, with Albert Pujols, Yadier Molina and So Taguchi joining Carpenter.
Dan Blank is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.