Mennzies defeated number eleven seed Michael Smith 6-2 to advance into the next round. He came 2-1 up and doubled his lead with a 15-darter and a 60 check-out. A 27-darter put him one leg away from victory, before hitting another 15-darter to claim the win.
Lewis won three legs on the spin after a 3-4 deficit to beat Christian Bunse. White only dropped one leg in a 6-1 victory over Rusty-Jake Rodriguez to reach the last sixteen.
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Steve Beaton (97.41) 5-6 (91.51) James Wilson
Simon Whitlock (95.38) 4-6 (98.1) Vincent van der Voort
Gerwyn Price (99.3) 6-4 (87.9) Brendan Dolan
Dave Chisnall (98.97) 6-2 (88.83) Dietmar Burger
Ricky Evans (100.09) 6-1 (92.26) Kirk Shepherd
Michael Smith (81.40) 2-6 (85.92) Cameron Menzies
Ian White (97.14) 6-1 (81.81) Rusty-Jake Rodriguez
Adrian Lewis (90.83) 6-4 (89.54) Christian Bunse