Brentford and Aldershot Town will face an FA Cup First round replay after 1-1 draw at Griffin Park.
Both teams scored in an entertaining first quarter - Charlie MacDonald equalising Wade Small's early strike - and although The Bees had the better of much of the first half and the early part of the second they couldn't edge ahead.
And the teams will now go head-to-head again in Hampshire in ten days for a place in the Second Round.
It took around ten minutes for the game to settle down - the teams were feeling each other out in the opening stages and although Aldershot were on the front foot, there were few chances.
Luke Guttridge had an early shot blocked before the first chance of note came at the other end.
Stephen Wright overlapped on the right, his cross reached Myles Weston at the far post, Nicky Forster made a poor connection and MacDonald couldn't force home the loose ball.
Forster had a near post shot saved for The Bees while at the other end, a Jermaine McGlashan cross deflected off Wright and Richard Lee turned it behind.
The Shots took the lead just before the quarter hour with a fine goal - Luke Guttridge fed the ball into Small and the lone striker brought the ball down, turned and fired into the bottom corner in one movement.
Craig Woodman made an important tackle to stop Guttridge latching onto an Aaron Morris pass and racing clear to make it two.
But Brentford soon recovered from conceding the goal and took control of the game.
A Wright cross was just too high for MacDonald and when Karleigh Osborne released Weston on the left it led to a deflected Marcus Bean effort that Jamie Young had to save superbly down to his left.
The equaliser was coming and it duly arrived when Wright chipped a ball forward, Young got caught in no man's land and MacDonald looped a first time header into the net.
Guttridge dribbled a shot wide before Robbie Simpson hit the post with a left footed drive from the edge of the box.
McGlashan lifted an effort over for the visitors but an entertaining first quarter of the game soon gave way to a more attritional second quarter with fewer chances.
Brentford were in command but Aldershot's five man midfield made it difficult for The Bees to influence the game in the final third.
Simpson had two low shots saved just before the break but they were both comfortable for Young in the Aldershot goal.
Brentford were completely dominant in the early stages of the second half.
They could have been ahead inside seconds when Toumani Diagouraga had a shot blocked and Pim Balkestein headed a corner over soon after.
MacDonald went close with a toe-end near post effort from a Simpson cross that rolled across the face of goal and Balkestein fired over from distance moments later.
Forster headed over for The Bees before Young saved a looping Simpson header but Aldershot nearly hit the hosts with a sucker punch.
McGlashan got in behind Woodman on the left as the left back tried to shepherd the ball out of play and cut it back but Small missed his kick in front of goal.
Lee saved a Small header soon after but all the action was at the other end.
Simpson forced a save from Young when he met a Weston corner and when he fired in the follow-up Aldershot scrambled it off the line.
The Bees went close again soon after when Simpson headed a Balkestein ball back across, it narrowly eluded MacDonald - who may have been impeded - and Forster fired over at the far post.
As the game wore on it became more stretched, with Aldershot attacking with pace and in numbers on the break.
Osborne was forced to clear off the line from Small twice after a melee in the Bees box before Morris missed a header from a Ben Herd cross and the offside flag went up as the visitors tried to force it home.
Aldershot were probably the team that looked most like winning at the end - Guttridge fired a shot from 25 yards that cannoned off the post before Small shot wide from the re-bound.
McGlashan had another chance after when he took on Wright and created space for a shot but lashed it into the side netting.
Forster dragged a shot wide in the dying seconds but neither team could find the winner so they'll have to do it all again.
Brentford: Lee; Wright, Osborne, Balkestein, Woodman; Simpson (sub Hudson 85 mins), Bean, Diagouraga (sub O'Connor 77 mins), Weston; MacDonald, Forster
Subs (not used): Royce, Legge, Spillane, Saunders, Wood
Bookings: Weston (62 mins)
Aldershot Town: Young; Herd, Jones, Charles, Vincent; McGlashan, Guttridge, Morris, Harding, Straker; Small (sub Hylton 89 mins)
Subs (not used): Little, Hylton, Fortune, Randall, Jackson, Hutchings
Attendance: 4,090 (997 away fans)
By Chris Wickham