Mark Ramprakash's milestone of reaching 35,000 first-class runs was overshadowed by Alviro Petersen's double century as Glamorgan ended day two in control of their LV= County Championship clash with Surrey at the Oval.

In response to the visitors' 419, Surrey ended the day 179 runs adrift with four first innings wickets intact having found themselves in trouble at 18 for two.

Jason Roy fell leg before to Chris Ashling, who struck again two overs later when Rory Hamilton-Brown was caught at the third attempt at third slip for 12. But thanks to Ramprakash (67), Surrey recovered to 113 for three at tea, having also lost Zander de Bruyn, who became Alex Jones' maiden first-class scalp when he was caught and bowled off a leading edge.

Ramprakash cut Will Owen for four to go 39th in the all-time list of first-class run-makers, overtaking Brian Close and, five balls later, went past the 35,000-mark by despatching Owen to the rope at extra cover.

He raised his 69-ball half-century with a cut four off Robert Croft and added 90 in 24 overs in tandem with Steve Davies before driving loosely at Ashling to be bowled via an inside edge for 67.

With support from Tom Maynard, Davies then shared another half-century partnership and moved to his own fifty in 94 deliveries.

With 11 overs to go, Mark Wallace, leading Glamorgan in the absence of Petersen, who did not take the field after his marathon knock, appeared to be running out of ideas when Davies slashed at Owen and was caught at first slip. The Welshmen were given a further boost when Maynard shouldered arms to Owen in the penultimate over.

Earlier, Glamorgan lost their last six wickets for 64 runs to leave their card looking decidedly top-heavy. Tim Linley could have picked up six wickets in the first half hour, but two chances went to ground and another flew at a catchable height in-between second and third slip.

In the third over of the day, Maynard pulled off a brilliant catch at third slip to see the back of nightwatchman Owen. Four overs later, Wallace was snapped up at first slip before Croft, who was caught down the leg side, started his 41st birthday with a second ball duck.

Resuming on 178, Petersen duly became the fourth Glamorgan batsman to make a double century against Surrey when he cut Chris Jordan for four in the 113th over. It had taken the Glamorgan skipper seven hours 40 minutes, 326 balls and it included 23 fours and six.

Just before lunch, Jordan struck twice in the space of three deliveries when he accounted for Dean Cosker, who was caught at first slip, and Petersen (210), with one that nipped back off the seam.