Surrey claimed back-to-back wins to start their Clydesdale Bank 40 title defence with an 18-run victory over Scotland on the Duckworth-Lewis method.
Jacques Rudolph top-scored with 69 as the defending champions - who beat Somerset in the tournament curtain raiser on Friday - posted a total of 187-7 after being asked to bat.
Under murky skies Scotland struggled to find the momentum they needed, aside from Richie Berrington's unbeaten 43, but just as he looked to take control the rain set in to deny Scotland.
The Saltires had reached 118-6 when the Edinburgh rain brought a premature end to their run chase.
Skipper Rory Hamilton-Brown, who struck a century against Somerset, fell for just five in the second over and Jason Roy quickly followed to leave Surrey in early trouble at 20-2.
That brought South African Rudolph to the crease early and he slowly set about accumulating runs in the tricky conditions.
His steady bid to set a platform was undermined, however, by the departures of Steven Davies (22), Zander de Bruyn (16) and Matthew Spriegel (15) before they could find full flow.
Rudolph remained patient though, hitting just a single boundary in his 89-ball stay, before he Scotland crucially managed to extricate him in the 36th over.
Off-spinner Majid Haq (2-27) made the breakthrough when he had Rudolph caught by Jean Symes to leave Surrey 151-6.
While Ireland international Gary Wilson (9) then fell soon after, Surrey finally produced some late hitting thanks to Gareth Batty (17) and Jon Lewis (15).
Scotland's chase was soon affected by the rain, the players forced off after 3.5 overs with the score 13-0.
Two overs were lost and when the players returned England seamer Jade Dernbach quickly removed Calum MacLeod before Josh Davey and Symes fell in consecutive overs to have Scotland in trouble at 39-3.
When opener Fraser Watts (25) was stumped to give Spriegel (two for 16) his second wicket, the hosts looked to be losing their way before Berrington started to turn things around.
With the rain threatening the 25-year-old right-hander progressed to 43 from 57 balls, but he did not have enough time to overtake the Duckworth-Lewis calculations as the weather finally closed in with the Scots 118-6.