After a hot start to the season, Westbrook has struggled in his last three starts. He has allowed 26 hits in 15 innings and watched his ERA rise from 1.76 to 3.38. Manager Mike Matheny, however, remains confident in Westbrook.
"I have no concerns," he said.
Right-hander Randall Delgado will start for the Braves. He has given up four runs in back-to-back starts, both losses. The Braves have lost four of Delgado's last five starts.
The Braves are also hoping for a little home cooking Tuesday. An 8-2 loss Monday extended their losing streak to a season-high eight games, their longest since losing nine in a row in April 2010.
Catcher Brian McCann said he thinks the Braves are close to getting back on track.
"We're there, we're showing up, we're working," he said. "We're just not seeing results on the field right now. We're going to continue to show up and battle and get this thing turned around, hopefully [Tuesday]."
Braves: McCann expects to play again Tuesday
Catcher Brian McCann returned to the starting lineup Monday after suffering from the flu for the last week. It was McCann's first start since last Monday in Cincinnati.
McCann went 0-for-4 in the Braves' 8-2 loss, but said he felt good behind the plate. He expects to be able to catch Tuesday night.
"I felt fine today," he said. "I felt like I couldn't have picked a better day to come back."
Manager Fredi Gonzalez has said the Braves go as leadoff hitter Michael Bourn goes, so it's not a surprise he has slumped during Atlanta's eight-game losing streak.
Bourn went 0-for-4 Monday, his fourth hitless game in the last eight days. During the skid, Bourn is hitting .182.
Cardinals: Freese expected to return to lineup Tuesday
Manager Mike Matheny held third baseman David Freese out of the lineup for Monday's series opener with right wrist soreness. Freese said the injury occurred late last week when he made a diving play in the field.
Freese was removed in the eighth inning of the Cardinals' 8-3 victory Sunday due to the soreness. He is listed as day to day and expects to play Tuesday.
"He could be playing," Matheny said. "But when he has little things like that come up, we try and nip it in the bud."
Left fielder Matt Holliday has made Turner Field his playground throughout his nine-year career. In 20 career games in Atlanta entering this week's series, Holliday was hitting .366 with a .416 on-base percentage.
Holliday added to those totals in Monday's victory. He went 2-for-3 with a run. Holliday also reached base on a walk and was hit by a pitch.
In addition to Westbrook, the Cardinals have three players with Georgia roots. Right-handers Mitchell Boggs and Adam Wainwright were both born in Georgia, and second baseman Tyler Greene went to Georgia Tech.