Surrey booked a home tie against Somerset in the Friends Life T20 quarter-finals as they thrashed Essex by 61 runs in their final South Group match at Chelmsford.
Defending a total of 165, they dismissed their opponents for 104 in 16.2 overs, although Essex at least had the consolation of joining their victors in the last eight by being one of the best two third-placed sides.
Essex now take on Nottinghamshire at Trent Bridge.
Surrey's triumph was built upon a fine innings from opener Steve Davies. After watching Jason Roy and Vikram Solanki depart in Graham Napier's first over with only 12 on the board, Davies struck a punishing 54 from only 27 balls.
His knock included six fours and three sixes, and once he was caught in the deep attacking David Masters, Zander de Bruyn and Gary Wilson ensured a challenging target.
Wilson helped himself to two sixes and three fours on his way to 43 in 26 deliveries, while De Bruyn also hit two sixes in contributing 39 from as many balls.
Both were removed by paceman Reece Topley, who finished with three for 40 to take his number of scalps in this season's competition to 19, the highest in the country.
But it was his pace colleague Napier who emerged as the most successful bowler as he returned to polish off the innings and finish with four for 18 from four overs.
However, it soon became clear his heroics would not result in an Essex victory.
Azhar Mahmood got rid of Greg Smith and Mark Pettini before the total moved into double figures, while Hamish Rutherford - after being dropped twice - was caught behind off Jon Lewis with the total on 16.
Four more wickets fell as Essex slumped to 52 for seven, and despite a brave and belligerent innings from Ryan ten Doeschate that spared his side utter humiliation, the home side's response came to an end with 22 balls remaining.
Ten Doeschate, who struck a 31 ball half-century that contained four sixes and one four, was the last man out when bowled by Jade Dernbach for 60.
De Bruyn followed up his fine effort with the bat by emerging as Surrey's most successful bowler with four for 19, while Mahmood and Dernbach supported him with figures of two for 11 and two for 22, respectively.