James Vince hit a brutal 84 off only 49 balls to lead holders Hampshire Royals to the top of the Friends Life t20 South Group with a seven-wicket thrashing of previous leaders Middlesex Panthers at Richmond.
It looked as though Middlesex, who dropped to third, had set Hampshire a challenging target when Dawid Malan's 77 enabled the hosts to reach 164 for five on a slow, club pitch.
However, Vince and opening partner Michael Carberry made a mockery of that total by putting on 89 in the first seven overs to all but end the contest.
They made a relatively slow start before the floodgates opened in the third over when Carberry hit New Zealand paceman Kyle Mills for four-four-six-four-four-two.
Two overs later, Vince followed suit by cracking Gurjit Sandhu for five successive boundaries and, when Carberry thumped Neil Dexter for a four and two sixes in the same over, Hampshire had plundered 83 from the powerplay.
Middlesex needed a huge slice of luck to break the stand when Vince drove Ravi Patel down the ground and the left-arm spinner deflected the ball into the stumps to run out Carberry, who had made 43 off 16 balls with five fours and three sixes.
There was no respite for Middlesex, though, as Jimmy Adams helped Vince add another 70 in eight overs before the latter, who had hit 12 fours and two sixes, drove Sandhu to Paul Stirling to long-off.
Adams fell for 29 in the same over yet Hampshire romped home with 4.5 overs to spare.
Dimitri Mascarenhas made the early impact by having Stirling caught on the midwicket boundary by Adam Wheater and Joe Denly at cover by a diving Adams in a four-over spell that cost only 19 runs.
Middlesex were contained to 57 in the first 10 overs before Adam Voges broke the shackles by hitting Liam Dawson for two fours and a six in an over, going on to share a third-wicket partnership of 55 with Malan.
Voges had made 28 off 17 balls when he heaved Vince to Carberry on the midwicket boundary - although Malan found an even more productive partner in Adam Rossington, who helped add another 52 in only four overs.
Rossington also hit three fours and a six in his 26 off 16 balls before he pulled a Danny Briggs full-toss to Dawson on the square-leg boundary.
Malan had struck nine fours and a six when he was caught at long-on from the last ball of the innings.