|LV= County Championship Division Two, Nevil Road|
|Close, day three: Gloucestershire 112 & 274-5 v Surrey 626-6|
|Surrey 7pts, Gloucestershire 0pts|
Captain Michael Klinger's century forced Surrey's bid to wrap up their County Championship match with Gloucestershire into the final day.
Declaring on their overnight 626-6 and 514 runs ahead, the visitors had Gloucestershire 125-3 by the 44th over.
But opener Klinger put on 101 for the fourth wicket with Ian Cockbain (48 no) and struck 17 boundaries on his way to 120, before being caught off Jason Roy.
The hosts moved on to 274-5 by stumps, still trailing by 240 runs.
Surrey will remain confident of picking up the five wickets required for victory, which would be only their second of the Division Two campaign and would lift them to third in the table.
But their hopes of finishing a day early were dashed by Australian Klinger's second century of the summer, following his 129 against Leicestershire last week, which came from 229 balls and included 15 fours and two sixes.
The loss of experienced Geraint Jones (13), who was lbw to Jade Dernbach late on, meant Cockbain, chasing his first Championship fifty of the season, and Tom Smith (13 no) will have their work cut out when they return to the crease on the final morning.
BBC London 94.9's Mark Church:
"Gloucestershire batted defiantly on the third day, led by Michael Klinger.
"The captain made 120 as Surrey were made to stay patient by the home side. Gareth Batty was the pick of the bowlers with 2-58, but Jason Roy, after his 55-ball hundred yesterday, then took the vital wicket of Klinger.
"And late in the day Jade Dernbach trapped Geraint Jones lbw for 13. The hosts still trail by 240 and Surrey will still be confident of finishing off the game tomorrow with victory."