|LV= County Championship Division Two, Nevil Road|
|Close, day two: Gloucestershire 112 v Surrey 626-6|
|Surrey 7pts, Gloucestershire 0pts|
Rory Burns, Vikram Solanki and Jason Roy made contrasting centuries as Surrey piled up a huge lead on day two against Gloucestershire at Nevil Road.
Burns and Solanki's partnership of 207 established a new third-wicket record for the county against Gloucestershire.
The former was eventually caught at slip for 199, but Solanki then added 95 with Roy before he fell for 143.
Roy hit the season's fastest hundred off 55 balls and was on 121 at stumps, with Surrey 626-6, a lead of 514.
It was a brutal exhibition, featuring eight sixes and 10 fours either side of a short rain hold-up, and potentially demoralising for the hosts in the final session of a gruelling day.
With a Surrey declaration to come, Gloucestershire will need a vast improvement on their first-innings batting performance, and probably help from the weather, to have any chance of escaping a heavy defeat.
Will Gidman picked up the wickets of Hashim Amla and Steven Davies for figures of 2-75, but the younger members of their attack were unable to contain the Surrey batsmen.
Burns, who had been 98 not out overnight, reached a new career-best when he had made 124 and was poised for a double century when Liam Norwell (2-116) dismissed him immediately before tea.
Solanki's hundred, the 34th in first-class cricket of his career, was typically stylish and he collected a six and 18 fours before 19-year-old Matt Taylor had him caught behind by Geraint Jones.
BBC Radio Gloucestershire's Bob Hunt:
"It is going to be a real test of character for Gloucestershire over the next two days after their bowlers, without bowling particularly badly, csaw batting of real quality take the game completely out of their hands.
"It was a day of contrasting styles. Solanki's innings was graceful, Roy's bombastic and amidst all the carnage Burns' 199 was almost forgotten. He fell cruelly short of a double hundred when perhaps he tried to take too much time to reach that landmark.
"A satisfactory second half of the match for the home county will surely be to occupy the crease and take the game into a fourth day, but they will have to apply themselves far better than they did in the first innings to avoid an embarrassing result."