Kelly went 5 1/3 innings, allowing four hits and a run. He became the first pitcher to have three hits in a spring training game since Chris Volstad did it for the Marlins in 2010.
Kelly made 37 appearances for the Cardinals last season, including 15 starts, and went 10-5 with a 2.69 ERA.
The Braves, still reeling from the possibility of beginning the season without ailing pitchers Mike Minor, Brandon Beachy and Kris Medlen, started non-roster invitee Gus Schlosser. He allowed three runs, two earned, and four hits in four innings.
Schlosser struck out five and did not walk a batter.