2018 – Rookie Ronald Acuna of the Braves achieves a very rare feat as he homers to lead off both games of a doubleheader against the Marlins. In the opener, he starts the game with a home run off Pablo Lopez as the Braves cruise to a 9 – 1 win, then in the nitecap, he victimizes Merandy Gonzalez, making his first big league start, as Atlanta completes a sweep with a 6 – 1 win. Only three other players had done this before him: Hall of Famers Harry Hooper (in 1913) and Rickey Henderson (in 1993), and most recently Brady Anderson on August 21, 1999.

On August 13, 2018 — 2018 – Rookie Ronald Acuna of the Braves achieves a very rare feat as he homers to lead off both games of a doubleheader against the Marlins. In the opener, he starts the game with a home run off Pablo Lopez as the Braves cruise to a 9 – 1 win, then in the nitecap, he victimizes Merandy Gonzalez, making his first big league start, as Atlanta completes a sweep with a 6 – 1 win. Only three other players had done this before him: Hall of Famers Harry Hooper (in 1913) and Rickey Henderson (in 1993), and most recently Brady Anderson on August 21, 1999.

Source:
Baseball Reference August 13
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game