Great Evans' first Blues goal against Corinthian-Casuals was enough to secure Wingate & Finchley a 1-0 win - and passage through to the London Senior Cup semi-final - at a brisk Maurice Rebak Stadium.
It took 19 minutes for the game to open up. Luke Ifil sprayed a pass inside from wide right to Evans, whose first-time touch sent Toby Bancroft through but his shot from inside the box hit the post.
Six minutes on, Jake Eales was on hand to deny the visitors from a near lead - which sparked a flurry of attacks from the north Londoners.
On 26 minutes, Charlie Ruff sent a pass out right to Ifil whose shot from a tight angle narrowly evaded the post. A minute later, Ruff placed his header just wide from inside the box.
Ruff - involved again - whipped a cross from wide right into Evans who looped a pass into the path of Bancroft, but his poked attempt from a few yards was kept out by Daniel Bracken on 34 minutes.
On the stroke of half-time, Ruff's free-kick was headed on by Sean Grace towards Bancroft who misplaced a difficult volley to the left of goal.
Seven minutes after the break, Evans broke the deadlock. Ruff lobbed a pass over the Casuals' back line for the former to poke a left-footed shot inside the near post.
On 63 minutes, Ruff broke the lines for a one-on-one with Bracken who held the low shot.
Minutes later, Ruff burst through the middle from deep and picked out Ifil on the inside right, whose smashed cross found Great to guide home - but his second of the night was ruled offside.
With James Bracken's team frantically searching for an equaliser, Fergal Hale-Brown was needed on 79 minutes to get down low and tip Gabriel Odunaike's curled shot round the post.
Spencer Knight's side now await either Hendon or Balham in the last four.
Report by Khalid Karimullah