TWO late tries were not enough as Grove suffered a 21-17 defeat at Dorchester in a bad-tempered Southern Counties South clash.
They trailed 21-3 with ten minutes to go, before Guy Nicholl and Ben Nicholl dived over.
Alex McCarthy converted both tries and kicked a penalty.
James Wiltshire was red-carded for Grove after reacting to a high and late tackle, which saw the opposition player also sent off.
Wallingford remain second in Southern Counties North after coming from behind to beat Stow-on-the-Wold 20-16 at home.
Jackson Sayce and Sam Clarkson crossed for the hosts, with Jack Edwards converting both and kicking two penalties.
Bicester beat Reading Abbey 22-16.
Peter Tarrega, Charlie Bethell, Dan Walker and Peter Howard crossed in the victory, with Josh Wordsworth kicking one conversion.
Littlemore were hammered 112-0 at Windsor.
In the BB&O Premier, second-placed Oxford lost 13-11 at home to leaders Chesham.
As a result, John Brodley’s side are now four points off top spot.
They trailed 8-3 at the break, Tom Murton kicking a penalty for Oxford.
Josh Morris touched down in the second half, but it was not enough.
Wheatley fell to a 29-19 defeat at home to Tadley.
Jack Smith, Luke Agius and James Butler crossed for the hosts, with Aaron Laman converting twice.
The game was marred by a melee, which resulted in red cards for Jordan Hook and the visiting scrum half.
Didcot were beaten 13-0 at home by Milton Keynes.
In the Championship, Abingdon thumped hosts Berkshire Shire Hall 50-0, while Faringdon beat Phoenix 16-12.
Chipping Norton were handed a walkover by Winslow.
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