England captain Owen Farrell was sent off for a high tackle as Saracens fell to a surprise defeat against a much-changed Wasps side at Allianz Park.
The Sarries skipper caught Wasps' Charlie Atkinson in the face with his left shoulder in the 61st minute, with the match poised at 15-15.
The visitors were able to press home their man advantage, Tom Willis powering over to give them a cushion.
And in his 100th game for Wasps, Jimmy Gopperth was flawless with the boot.
More to follow.