5. Austin Riley | Braves debut: May 15, 2019
Young Thick, Austin Riley is the Braves fifth-longest tenured player. The slugging 3B has been a core member of the team for three seasons, but it took him a minute to get to that point.
After an Ender Inciarte injury, the Braves turned to Riley to fill the outfield hole. The then rookie got off to a hot start, hitting seven bombs in his first month with a 1.143 OPS, but pitchers quickly figured him out.
Riley ended his rookie season with an 85 wRC+ and 0.1 fWAR. He had a similar 2020, with a 88 wRC+ and a 0.0 fWAR.
Then he broke out. Since 2021, his lowest fWAR season was his 2021, when he finished with 4.8. He's become a perennial star, anchoring 3B for the long future. In 2022, he signed the biggest contract in Braves history.