Weigel was recalled from Triple-A Gwinnett prior to Friday's game in Miami.
He hasn't pitched in three days, so Weigel will give the Braves a fresh bullpen arm in the short term. While he has been developed as a starter for most of this season (his first full year back from Tommy John surgery), he has been deployed as a reliever lately at Triple-A. Weigel has not allowed a run while striking out six and allowing two hits and two walks over his last seven innings. Despite a brief stint on the 25-man roster in July, the 25-year-old right-hander has yet to make his big-league debut.