Caitlin Clark heads into next week’s WNBA Draft as the consensus No. 1 overall pick — and more than left her mark on the college game at Iowa over the past four seasons. Having run into Clark in the NCAA Tournament in each of the last two seasons, South Carolina head coach Dawn Staley recognizes the impact Clark has had on taking women’s college basketball mainstream. “I still think that Caitlin Clark almost single-handedly has elevated our game and I hope that — I said this yesterday that as she moves on to the WNBA, she elevates the WNBA,” Staley said on TBS ahead of the men’s national champ…