County Championship D1, Guildford, day three:
Warwickshire 537; Surrey 331 & 363-7 (at close)
Surrey's Jon Batty and Ali Brown kept Warwickshire busy in the field as the Division One leaders endured a tough third day at Guildford.
The home side were 363-7 at the close, a lead of 157 after they had been asked to follow on by Nick Knight.
Dismissed for 331 in their first innings, Surrey were staring at defeat after slumping to 24-3.
But Batty (145) and Brown (103) put on 200 and Tim Murtagh was only six short of a personal best on 47 at the close.
Surrey: S A Newman, R Clarke, M R Ramprakash, A D Brown
J N Batty (Capt), A J Hollioake, Azhar Mahmood, T J Murtagh
J Ormond, P J Sampson, N D Doshi.
Warwickshire: N V Knight (Capt), M A Wagh, I R Bell, I J L Trott
M J Powell, D R Brown, G B Hogg, T Frost, N Tahir
A Richardson, D Pretorius.
Umpires: M J Harris, V A Holder.