Exeter Chiefs suffered a heavy defeat at Leicester.
Adam Thompstone scored a hat-trick of tries on his Tigers debut, with Toby Flood kicking 15 points.
Rob Baxter's men had put the first points on the board, with Ignacio Mieres kicking a penalty after just two minutes.
The home side responded almost immediately with Thompstone crossing the line four minutes later, and they never looked back after that.
Ben White scored an 80th minute consolation try for the Chiefs.