|LV= County Championship Division Two, Guildford|
|Middlesex 308 & 190-4 beat Surrey 117 & 379 by six wickets|
|Middlesex 22pts, Surrey 3pts|
Sam Robson led the way with an unbeaten 94 as Middlesex earned a London derby victory over Surrey at Guildford.
Resuming on 306-6, Tom Maynard took his score to 141, backed by an unbeaten 34 from Gareth Batty as Surrey posted 379.
That set Middlesex 189 to win in two sessions, but the visitors completed the job just after tea.
Scott Newman (39) and skipper Neil Dexter (31) proved Robson's main allies as Middlesex moved into serious promotion contention from Division Two.
It was Middlesex's first County Championship double over Surrey since 1983 but, more importantly, the 22 points from their fifth win of the summer sneaks Angus Fraser's side back above Gloucesteshire into second.
Young Australian batsman Robson, from Paddington, New South Wales, decided the outcome by hitting the sixth half-century of his fledgling first-class career to steer the visitors to their victory target of 189 with 29 overs to spare.
At the start of the final day Surrey, who had been made to follow on, batted for just over an hour in adding 73 to their total of 379, Friday's century-maker Maynard again entertaining the meagre Saturday crowd with his big hitting and fearless stroke play.
Maynard's career-best knock came to an end on 141 off 101 balls when he took one risk too many and skied off a leading edge to Jamie Dalrymple at slip, while Tim Murtagh took his match tally to 10-128 and his season's Championship aggregate to 50 wickets.