Matt Lamb’s second first class century underpinned Warwickshire’s fightback against Surrey as the opening-round clash between the two LV= Insurance County Championship title contenders heads for a draw at Edgbaston.Reigning champions Warwickshire closed a weather-truncated third day on 293 for seven in reply to Surrey’s 428 for eight. The visitors are well-placed for a solid first innings lead but, with only one day left, the match appears destined for a draw.