Sphinx Sports & Social won 3-1 at AEI Rugby The Bell in a Coventry Alliance Division 2 fixture.
Kelly gave Sphinx the lead on the half hour mark and an own goal eight minutes later made it two.
The Daventry based side pulled on back in the 67th minute but with three minutes of the match remaining, Jack Cudworth hit a third for Shaun Sweeney's side who took another good victory.