Saints through to last four
Northampton booked a place in the semi-finals of the LV= Cup, with England Under-20 winger Jamie Elliott scoring twice in their eight-try 57-10 romp against Wasps.
The Saints dominated throughout against a hopelessly out-of-form Wasps side to ensure that Exeter cannot catch them in Pool Four, regardless of their result against Bath on Sunday.
Noah Cato also grabbed a brace, with further tries coming from Andy Long, James Craig and Alex Waller. They were also awarded a penalty try.
Joe Simpson scored a consolation try for the Wasps late in the game.