Surrey held their nerve at the death to clinch a tense three-run victory over Sussex in a low-scoring Friends Life t20 thriller at the Kia Oval.
Chasing 140 for victory, the Sharks required 12 off their final over but were thwarted by veteran all-rounder Azhar Mahmood who restricted them to eight as they finished on 136-8.
The Sussex pursuit had got off to poor start as, having reached 11, they lost three wickets without addition to the score in the space of seven balls; Chris Nash (five), former Surrey skipper Rory Hamilton-Brown (nought) and Luke Wright (six) all departing.
Dwayne Smith, the West Indian all-rounder, then lit up proceedings by taking 22 off one Zander de Bruyn over - including a brace of sixes and two fours - to put Sussex well ahead of the asking rate.
With 53 on the board and 26 to his name, Smith worked across the line to Jonathan Lewis to fall leg before, but solid contributions from Michael Yardy (27) and Scott Styris looked to have put them on course for victory as they needed only 14 from the last two overs.
But, with eight balls remaining Jade Dernbach yorked Styris for a valiant 46 from 33 balls to tilt the balance Surrey's way and, after Glenn Maxwell ran out Chris Jordan, Mahmood saw the job through with a solid final over.
Having won their fourth successive t20 toss, Surrey made a decent start before losing Steve Davis for 11 as he chipped a slower ball from Chris Liddle into the hands of Luke Wright at mid-off.
Jason Roy departed leg before for 29 when working across the line against Styris, then Ricky Ponting's Oval debut for Surrey ended prematurely after only 11 balls as the former Australia captain picked out Smith on the ropes off the bowling of Yardy for six.
Eight runs on, fellow Australian Maxwell (eight) clipped another comfortable catch to Smith, this time at deep mid-wicket, to give Yardy his second wicket and Surrey only limped to three figures in the 16th over.
But some late hitting from Gary Wilson and de Bruyn (13 not out) added some respectability to the total, Wilson top-scoring with 44 from 37 balls - including a six off the last ball from Liddle - as the hosts ended on 139-6.