Sri Lanka legend Kumar Sangakkara led Surrey into the One-Day Cup semi-finals with an extraordinary display of late hitting as an unbeaten 130 helped see off Northamptonshire.
Chasing 277 at the County Ground, Surrey's response went down to the wire as Sangakkara led the charge but his team-mates struggled to rally around him.
Reduced to 250-9 with number 11 Jade Dernbach for company after Gareth Batty and Stuart Meaker were run out, Sangakkara dragged his side to the final over, where 12 runs were required.
Pressure? What pressure? Sangakkara took the target down to four with three balls left with an extraordinary diving paddle shot off the bowling of Azharullah before securing victory off the final ball with a thumping hit through point when just two were required.
There was no shortage of highlights elsewhere in the competition as Yorkshire's England international Liam Plunkett pulled of a spectacular caught-and-bowled to dismiss Kent's Darren Stevens for 54 on the way to an 11-run win at Canterbury.
Yorkshire and Surrey will meet in the semis, with Warwickshire and Somerset meeting in the other last-four clash with a place in September's Lord's final at stake.