4. Billy Vunipola, 18 years 165 days, Wasps v Yorkshire Carnegie (17 April 2011)
Now known for his exploits with the reigning Gallagher Premiership Rugby and European champions Saracens, the powerhouse number eight first made a name for himself at Wasps.
Vunipola came off the bench against Yorkshire Carnegie, then known as Leeds, and crashed over the whitewash from a ruck just short of the tryline in the 51-18 triumph.