The 21 year old Acuna followed up his 2018 Rookie of the Year campaign with an All-Star game start, 41 homers, and a league leading 127 runs scored. He finished with a .280/.365/.518 batting average/on base percentage/slugging percentage.
According to the Bill James Handbook 2020, Ronald was the 5th best baserunner in baseball. Presumably this takes into account turning the occasional double into a single. It certainly takes into account his 80% success rate on his league leading 37 stolen bases.
Acuna led off 118 games, putting up a .280/.364/.528 line in those games, but interestingly, only .196/.237/.438 actually leading off the game. He had a .265/.324/.470 line leading off any inning. (118 and 275 PA sample size respectively.)
Ronald played all 3 outfield positions, with all or parts of 100 games in CF, 46 in LF, and 35 in RF. He led the NL in Total Zone Runs as an OF, and finished 5th in the NL in range factor per game as a CF.
Like Albies, Acuna is signed through his age 30 season (team options for ages 29 and 30.) Here are Ronald’s most similar batters through age 21, according to Baseball Reference.