La Russa, in his 16th season with the Cardinals, has penciled in Lohse as the starter should there be a one-game playoff with Atlanta for the National League Wild Card spot.
"Let's hope he pitches," La Russa said. "He's had a heck of a year."
Lohse allowed a run in the first inning Saturday, but he responded with six shutout innings as the Cards rallied for a 2-1 win, leaving them two games behind the Braves in the Wild Card chase.
The Cardinals hold the tiebreaker with the Braves by virtue of their 5-1 head-to-head record.