|LV= County Championship Division Two, Kia Oval (day three, close)|
|Surrey 410: Sangakkara 101, S Curran 61no; Chambers 3-44, White 3-81|
|Northants 110 & 223-1 (f/o): Duckett 116no|
|Northants trail by 77 runs with nine second innings wickets remaining|
|Surrey 8 pts, Northants 3 pts|
Brothers Tom and Sam Curran combined to bowl Northants out for just 110 as Surrey took control at The Oval and closed in on the Division Two title.
Tom took 7-35 and Sam 3-46 as the visitors were forced to follow-on after being dismissed in 29.5 overs.
Surrey added 32 runs in the morning from 378-8 before they were bowled out for 410.
Following-on, Rob Newton fell third-ball but Ben Duckett (116no) and Alex Wakely (93no) recovered to 223-1.
|Brothers in arms|
|Tom and Sam Curran are the first brothers to share all 10 wickets in an innings since WG and EM Grace bowled Surrey out for Gloucestershire at The Oval in 1871.|
It was a day of double celebration for Sam Curran, who was selected for the England Under-19 squad for a tri-series in Sri Lanka in December.
For Tom, his first-innings figures were his second seven-wicket haul in first-class cricket and were only marginally more expensive than his career best 7-20 against Gloucestershire in June.
His impressive form continued at the start of Northants' follow-on as Newton edged him behind to Gary Wilson without scoring.
But it proved to be the last wicket of the day as Duckett reached his century in 123 balls and captain Wakely moved to within seven runs of his own ton by stumps to reduce the deficit to 77 runs.