Ahead 2-1 in the Series, the Braves were short on starting pitchers even before Charlie Morton broke a leg in Tuesday’s Game 1.
Lee, a 10th-round pick by Miami in the 2016 amateur draft from Fresno State, was 5-1 with a 1.54 ERA in 34 relief appearances this year for Triple-A Gwinnett.
The rookie also has pitched twice in the postseason.