In a match cut in half due to the weather, Hampshire kept their recent good form going with a 19-run victory over Surrey at the Oval.
Kevin Pietersen fell first ball against his former employers as Hampshire made the best of the conditions to win by 19 runs on the Duckworth-Lewis Method in their Friends Life t20 clash.
In a match reduced to 10 overs per team because of rain in south London, Surrey mustered 84-4 after Pietersen was dismissed with the first ball of the match - his first in the competition for the county this season - and against his former team too.
He was caught by Jimmy Adams off spinner Liam Dawson who took 2-10 off his two overs.
Jason Roy also fell cheaply but Steve Davies smacked 30 off just 11 balls, with six fours, and Zafar Ansari scored 35no to ensure the hosts had something to bowl at.
Adams (28no) and James Vince (24no) gave the Royals - who have now won their last five matches - a flying start, the latter taking 16 off Chris Tremlett's first over.
Adams smacked Stuart Meaker's third ball for six as they raced past 50 in five overs and Hampshire were 63-0 in 5.4 overs when rain prevented any further play, and the Duckworth-Lewis method gave the visitors a comfortable victory.
Hampshire are second in the south group, a point behind unbeaten Sussex, but, more importantly they are five ahead of third-placed Essex, who have a game in hand.