The former Northampton Saints man, who was making his debut for the club, also won the man-of-the-match award after a sparkling performance from the bench.
To vote for Clarke log-on to the Aviva Premiership's official Facebook page at www.facebook.com/premiershiprugby.
The nominated tries this week are:
James Wilson's first try for Northampton Saints v London Wasps
Jon Clarke for Worcester Warriors v London Irish
David Wilson for Bath Rugby v Sale Sharks
Adam Thompstone's first try for Leicester Tigers v Exeter Chiefs
Shaun Knight for Gloucester Rugby v London Welsh.