Santana (ribs) was released by the Braves on Wednesday.
Santana was placed on the 10-day injured list Friday with a right intercostal strain. The move is retroactive to Sept. 28.
Santana was reinstated from the paternity list prior to Saturday's game against the Padres.
Santana was placed on the paternity list Wednesday.
Santana was recalled from Triple-A Gwinnett on Tuesday.
Atlanta optioned Santana to Triple-A Gwinnett on Sunday.
Santana (2-0) retired the only batter he faced via strikeout and earned the win Friday over Washington.
Santana has allowed only one run over his last eight appearances (nine innings) dating back to June 18, posting a 1.00 ERA, 0.89 WHIP and 11:3 K:BB over that stretch.
Santana was recalled from Triple-A Gwinnett on Monday.
Santana was optioned to Triple-A Gwinnett on Friday.