COUNTY CHAMPIONSHIP Division One The Oval, day two (close):
Surrey 267 v Nottinghamshire 420-5
Patel lofts the ball over the leg-side field during his hundred at The Oval
Mark Wagh and Samit Patel hit centuries to put Notts in charge after Surrey's relegation was confirmed at The Oval.
The home side earned just two batting bonus points in their final game of the season as they were all out for 267.
It meant they can do no better than finish level on points with Lancashire and Yorkshire, and will go down because they have won fewer games.
Notts ended day two on 420-5 after Wagh (141) and Patel (135) shared a third-wicket stand of 252.
Surrey's tail-end resistance was brief at the start of play as they lasted just 6.3 overs and added 14 runs to their overnight score of 253-8.
Murtaza Hossain was caught at short leg off Mark Ealham for 16 and Shoaib Akhtar fell on his wicket after trying to pull a short ball from Andre Adams, who finished with 4-40, and top edging it into his neck.
Shoaib needed treatment before leaving the field, but he soon recovered and was able to bowl as first-change as Notts began their reply.
He was ineffective, however, and it was youngster Stuart Meaker who sent back opener Will Jefferson for five with the help of acting keeper Scott Newman's catch - first-choice Jon Batty having had to leave the field with a suspected broken finger.
Newman was relieved after lunch by substitute Daniel Euston, who plays club cricket for Malden Wanderers.
And it was Euston who ended a 95-run partnership between Wagh and Bilal Shafayat (44) by holding onto a bottom edge from the latter as he tried to square cut off-spinner Hussain.
The arrival of Patel curtailed Surrey's celebrations and after finding the boundary with his first scoring stroke, he proceeded to play a magnificent attacking innings, during which he cleared the rope on six occasions.
Patel's second Championship hundred of the summer took just 89-balls and by the time he was caught off Matthew Spriegel, the visitors already had a sizeable lead.
Wagh, who passed 1,000 runs for the season during his innings, followed one run as Euston took his second catch, this time from the bowling of left-arm paceman Pedro Collins.
But South African Ashwell Prince (24) and Graeme Swann (30 not out) halted the mini-slump and by close of play, Notts were 153 ahead and looking a good bet for a victory which will keep them in the thick of the title race.