London Welsh took full advantage of their old boy Colm Hannon's sin-binning for Esher on Saturday.
While Hannon was kicking his heels on the sidelines, Welsh ran in three tries against his new club, setting them on their way to a 43-19 National One win.
Esher led early on through on-loan Harlequin Seb Stegman, but Welsh levelled Tom Rock and Paul Sampson combined to put Mark Harris over.
However, despite piling on the pressure, Welsh only broke through again when Hannon was yellow-carded, Allen Chilten leading the charge.
He dived over for a try, then started the moves resulting in a penalty try, then another for Simon Etheredge, as Welsh led 29-7 at the break.
Hugo Ellis added a fifth try after the interval, and although Esher pulled some points back, Aled Thomas kept the Welsh score ticking over with 15 points from his boot.
Meanwhile, Leeds Carnegie have cited Jonathon Mills for stamping in Welsh's 38-0 defeat to the National One leaders two weeks ago, and the case will be discussed by an RFU panel on Monday.