Surrey have moved into a dominant position in their LV= County Championship Division One clash with Sussex as 13 wickets fell and 341 runs were scored on an eventful second day at the Oval.
The hosts closed the day on 250 for eight in their second innings, leading by 318, but only after 89 from captain Rory Hamilton-Brown and 47 from Tom Maynard got them out of trouble.
Newly-promoted Surrey appeared to be up against it as they slipped from 52 for one to 55 for four as James Anyon took two quick wickets and Mark Ramprakash was run out.
But Hamilton-Brown and Maynard hit out in a stand of 136 to take the game away from Sussex, who had been dismissed for 196 in their first innings.
After building a modest lead of 123, the two youngsters then produced an array of strokes to add 100 for the fifth wicket inside 20 overs to tame the Sussex attack.
They extended their partnership to 136 in 28 overs after tea before a stunning over-the-shoulder catch on the run at deep mid-wicket by Murray Goodwin sent Hamilton-Brown packing for 89 from 103 balls.
With the floodlights on in fading light, Jonathan Lewis (13) and Stuart Meaker (16) dug deep to add a precious 40 runs for the ninth wicket before the umpires deemed it too dangerous to play on.
Meanwhile, Nick Compton and Craig Kieswetter batted Somerset into a strong position on the second day against Middlesex at Taunton.
The home side had been reduced to 103 for three in reply to 246 when the pair came together but by the close they had added 99, with Compton unbeaten on 58 and Kieswetter 50 not out, and at 202 for three Somerset were in control.
Earlier, Vernon Philander had finished with figures of five for 43 from 20 overs. Joe Denly hit 73 for Middlesex and Tim Murtagh 45, while George Dockrell claimed two for 35.