Caitlin Clark receives harsh warning from Brittney Griner: "You're going against grown women this time". Caitlin Clark is a sporting and advertising phenomenon. The arrival of the former Iowa Hawkeye to the Indiana Fever has sparked all kinds of reactions among the media, fans, and players. Among the latter, veteran Brittney Griner issued a stern warning to the rookie: Professional basketball is a different world.In an interview with People magazine for the recent release of her book "Coming Home," Griner admitted that the arrival of the 2024 draft class will be a turning poing for the WNBA.She recalled when she arrived on the WNBA hardwood, "I had to get stronger, lock in a little more. There will be some growing [pains] for her, but she'll be fine."Despite her respect for Clark, Griner admitted that she was not a fan of the Iowa Hawkeyes, especially when they reached the finals of the NCAA Tournament, where they faced the South Carolina Gamecocks.The Mercury forward is an old friend of South Carolina head coach Dawn Staley.Griner worked under Staley on Team USA, and the coach was one of her biggest supporters during her imprisonment in Russia.