If we are talking actual influence:
1) LeBron - Basketball is an international sport now, like soccer, and he is the face of it
2) Tiger - Not just a great golfer, but broke down the implicit racist barrier golf had
3) Ohtani and Ichiro - I put these together. Maybe not US, but they sure transformed baseball.
5) Phelps - Swimming is really #1 Olynpic sport because of him
6) Biles - Gymnastics is the premier women's Olympic sport, if not the overall premier Olympic sport, because of her
7) Curry - Changed the way NBA basketball is played
8) Williams - Would be higher but Tennis is no where near what it was like in 70s and 80s
9) Clark - WNBA is now taken seriously because of her
10) Brady - Great yes, but did he really change anything? Marino was more influential on the sport in my opinion.
1) LeBron - Basketball is an international sport now, like soccer, and he is the face of it
2) Tiger - Not just a great golfer, but broke down the implicit racist barrier golf had
3) Ohtani and Ichiro - I put these together. Maybe not US, but they sure transformed baseball.
5) Phelps - Swimming is really #1 Olynpic sport because of him
6) Biles - Gymnastics is the premier women's Olympic sport, if not the overall premier Olympic sport, because of her
7) Curry - Changed the way NBA basketball is played
8) Williams - Would be higher but Tennis is no where near what it was like in 70s and 80s
9) Clark - WNBA is now taken seriously because of her
10) Brady - Great yes, but did he really change anything? Marino was more influential on the sport in my opinion.