The Braves needed to adjust their rotation because Jair Jurrjens is still slowed by a sore right knee.
Atlanta went into Monday night's game against Florida trailing San Diego by a half-game in the NL wild-card race.
Manager Bobby Cox says he plans to start Hudson on Tuesday against the Marlins, followed by Lowe on Wednesday.
Jurrjens said a cortisone shot on Saturday helped only a little. He says he may have a second MRI exam if the knee doesn't improve. The first test showed a slight tear.