Dominic Waldouck made the most of an unexpected call-up and inspired Wasps' return to the top of the Guinness Premiership with a 23-3 win over Worcester.
The England Saxons centre, only included in the side after Steve Kefu was ruled out with a groin injury, played a key role in both Wasps tries.
Serge Betsen touched down in the first half and Tom Varndell rounded off the victory in the last minute with his 50th Premiership try.
Danny Cipriani added 13 points with the boot as Wasps moved back above London rivals Saracens, the only other unbeaten club, on points difference.
Waldouck was named man of the match for a performance that would have caught the eye of England's coaches, who are searching for an inside centre following Riki Flutey's injury.
Adam Thompstone claimed a second-half hat-trick as London Irish ruthlessly swept aside Leeds Carnegie 56-7 to send out another emphatic reminder of their title credentials.
The Exiles were beaten by Leicester in last season's Premiership final but hopes are high at the Madejski Stadium that Toby Booth's men can go one better this time around.
They certainly had far too much quality for Leeds, and after a penalty try and a Chris Hala'ufia touch down in the first half, they cut loose after the restart by running in five second-half tries.
Hala'ufia completed his brace and Thompstone seized centre stage with his treble before Sailosi Tagicakibau added a late seventh to brutally illustrate the gulf between the sides and give Irish a second successive bonus-point victory.
Leeds lacked nothing in spirit but an outstanding first-half try from highly-rated flanker Kearnan Myall was ultimately little consolation for the Yorkshiremen, who have been tipped for relegation since the start of the season.