Sam Cook’s stunning triple-wicket maiden kept Essex in the hunt for a Vitality Blast quarter-final berth as they beat Middlesex by 21 runs at Lord’s.

Seamer Cook ripped the heart out of Middlesex’s top order with the wickets of Max Holden, Joe Cracknell and wicketkeeper John Simpson en route to figures of three for 23. Aaron Beard (two for 22) and Simon Harmer (two for 26) provided great support  as the hosts capitulated to 140-8 chasing a victory target of 162, only Steve Eskinazi (43) and Jack Davies (41 ) putting up prolonged resistance.

Earlier, Dan Lawrence (51) and Tom Westley (50) set a new record for the fifth wicket against Middlesex with their stand of 84, eclipsing that of 63 by Paul Grayson and Andy Flower back in 2003 as the visitors reached 161-6 despite three for 16 from Chris Green.

Toby Greatwood on his Lord’s debut made an early breakthrough for Middlesex when Feroze Khushi nicked him to Simpson and after threatening to cut loose Adam Rossington was pinned in front by Jason Behrendorf (one for 17).

The in-form Michael Pepper flowered briefly, hoisting Thilan Walallawita’s first ball  into the Mound Stand, but fell trying to repeat the shot, and when Paul Walter also holed out in the deep off the impressive Green Essex were 67-4.

Lawrence and Westley rebuilt, the former taking heavy toll of the wayward Martin Andersson before lofting Walallawita for six as he reached 50 in 32 balls. Westley’s 50 was scratchier and saw him given three lives. Simpson failed to stump the Eagles’ skipper on 22, while Greatwood grassed a chance on 33, both off the luckless Luke Hollman, and Holden shelled a third opportunity when Westley had 48. Fortunately for the hosts, neither half-centurion could kick on and only 11 runs came from the final three overs.

If their total looked a little light, Cook’s momentous over soon made it look much larger. Holden edged Cook’s first ball and though Rossington fumbled the chance, Harmer grabbed the rebound at slip. Cracknell lasted two balls before lobbing the gentlest of caught and bowled chances back to the bowler and the final ball saw Simpson brilliantly caught at second slip by Lawrence to leave the hosts in tatters at 9-3.

Jack Davies hit Harmer into the Edrich stand as he and Steve Eskinazi attempted a salvage operation, raising a 50 partnership off 41 balls. When Cook returned Eskinazi struck him for six over point, but the run-rate required kept climbing and scoreboard pressure told when Eskinazi slapped one from Aaron Beard straight to Cook at cover to end the stand at 86.

Davies was caught in the deep in the next over and despite some late six-hitting from Behrendorf Essex won with relative comfort as Middlesex suffered an eight defeat in nine in the competition.

Speaking after the match, Middlesex head coach Richard Johnson said: “It was another difficult night. I thought 160 was about par and we felt comfortable about chasing that sort of score down, but we lost three wickets early in the powerplay and it was always a tough ask after that.

“The boys tried to repair it for while to then go again at the end, but we lost wickets at the death.

“We’ve done that a few times now (giving a batter lives). At Chelmsford Essex were 38-3 and I think we dropped four catches there. So it has been a problem in a few matches now and in these games you can’t give good players opportunities. We missed a stumping as well. No-one means to drop catches or miss stumpings but they do come back and hurt you.

“We know with a red ball Sam Cook is one of the best exponents of seam movement in the country, but for him to get that amount of movement with a white ball – you don’t see that very often. He made it very difficult for us.

Result details:

VITALITY BLAST SOUTH GROUP

Middlesex 140-8

Essex 161-6

Essex won by 21 runs

Middlesex won the toss and elected to field