Colossal Tennis co-founder Sion Wilkins is a former #1 ranked USTA Northern Section player in both the 16 and 18 and Under divisions, a Class AA State Team Champion in 2001, and the 2002 Class AA MN State Doubles Champion.

A four-year letter winner for the Division 1 University of Minnesota Men’s Tennis Team, Sion played a prominent role on several NCAA qualifying teams serving as a starting member of the 2007 Gophers team that ranked as high as #11 in the nation.

Throughout his collegiate career Sion also competed in many ITA and ITF tournaments, and afterwards in Future and Challenger professional events.

A graduate in Sports Management from the University of Minnesota, Sion has a passion for education and excellence. He has coached numerous players to incredible sectional, national, and collegiate success including leading players to MN State Singles Titles and successful Division 1 tennis careers.

Sion is the current coach of the Breck School Boy’s Tennis Team. In 2016 and 2021 he led his team to a Class A State Championship and in 2015 was named Minnesota High School Coach of the Year.

The 2024 Ward C. Burton Northern Section Junior Development award winner, Sion is also a top USPTA certified coach, a Northern Section Team USA and Early Development Center coach, and past head coach for the Northern Section 14 and Under Zonal Team.