Who is the winningest athlete of all time?

Who is the winningest athlete of all time? And the winningest winner in sports history is none other than basketball legend Bill Russell. Russell led the University of San Francisco to three Final Fours and two National Championships while averaging upwards of 20 points and 20 rebounds throughout his college career.

And the winningest winner in sports history is none other than basketball legend Bill Russell. Russell led the University of San Francisco to three Final Fours and two National Championships while averaging upwards of 20 points and 20 rebounds throughout his college career.