|Royal London One-Day Cup, Kia Oval|
|Surrey 343-5 (50 overs): Roy 108, Davies 99; White 2-55|
|Northants 123 all out (24 overs): Duckett 56; S Curran 4-32|
|Surrey won by 220 runs|
England one-day opener Jason Roy smashed a magnificent century as Surrey thumped Northants by 220 runs in the One-Day Cup at The Oval.
Roy hit 108 off 79 balls, including 15 fours and one six, as he shared an opening stand of 195 with Steve Davies.
Davies looked set for a hundred of his own but edged Azharullah to Graeme White on 99 as the hosts posted 343-5.
Northants then capitulated to 123 all out to give Surrey their second-biggest margin of victory in one-day cricket.
|Surrey's 2007 record still stands|
|Surrey's largest one-day winning margin - a mammoth 257 runs - came when they scored 496-4 against Gloucestershire before bowling out their opponents for 239.|
Any hope Northants had of getting close to their target of 344 were scuppered inside the first 10 overs as Jade Dernbach (2-13) and 17-year-old Sam Curran (4-32) reduced them to 27-5.
Only wicketkeeper Ben Duckett's innings of 56 saved the visitors from total humiliation as he took his side past 100.
Northants have now lost their opening two games in Group A, while Surrey top the early table with one victory and a point from a no result.
Surrey batsman Jason Roy:
"It was an incredible team performance, with the boys bowling outstandingly well on that wicket and Jade Dernbach and Sam Curran hitting their lengths.
"Davo [Stephen Davies] and I had to work pretty hard in the first 10 overs or so when batting, but once we got in we rotated the strike really well and picked up the boundaries when we needed to.
"I was pretty disappointed with getting out when I did, which is a strange thing to say after getting a hundred, but there were 20-odd overs still to bat.
"Luckily, the other lads kept their foot on the pedal and we ended up getting a great total."