|LV= County Championship Division Two, The Kia Oval|
|Close, day two: Surrey 522-9d v Leicestershire 125-3|
|Surrey 4 pts, Leicestershire 2 pts|
Gary Wilson hit a career best 160 not out to put Surrey in a commanding position against Leicestershire.
Resuming on 325-7, Wilson shared a 192-run eighth-wicket stand with Chris Tremlett, who also scored a career-best 90, as Surrey declared on 522-9.
Leciestershire's response began poorly as Tremlett dismissed Mark Boyce for two and Jade Dernbach had Ned Eckersley trapped lbw for four.
Angus Robson's 75 helped the visitors finish on 125-3, 397 behind.
The hosts are aiming to secure their third victory of the season as they aim to make up a 45-point deficit on second placed Worcestershire in the promotion places.
BBC Radio Leicester's Richard Rae:
"Another tough day for Leicestershire, who were unable to part Chris Tremlett and Surrey skipper Gary Wilson throughout the entire morning session. The two batsmen went on to compile a record eighth-wicket partnership of 192 for the Londoners and were then unable to break a final-wicket partnership between Wilson and Jade Dernbach before Wilson eventually called it a day six overs before tea.
"To then lose three top-order wickets before the close rubbed salt in the wound, the more so when Angus Robson, having passed 50 for the sixth time in 10 first class matches, was once again unable to go on and record a maiden first-class century when he was leg before to Matt Dunn, bowling quickly in light that required the floodlights to be on to be deemed playable.
"The fact is that this remains a very good wicket, however, and one on which Leicestershire really should be capable of saving the game."