Bognor remained second in Ryman League premier division despite slipping to a 1-0 defeat away to Aylesbury.
The Rocks were left to rue a string of missed chances in a hard-fought contest.
Having weathered the early home pressure, Rupert Sansom could have given Bognor the lead but was denied by the woodwork.
Midway through the half Sansom should have squared for Jamie Howell who was free inside the box but decided to rifle his effort over the top.
Just before the break home keeper Isaac Rukundo did well to redeem himself when he dropped an initial cross from Michael Birmingham but dived bravely at the feet of Sansom.
Early in the second period Rekundo dived full length to tip a header from John Price over the top.
Just minutes later Sansom was again denied by the woodwork when his long range effort deflected off a post.
However, deep into second half injury time Alvin Bubb wrapped up victory for the hosts with a fine individual solo effort which saw him advance from midfield before drilling home a low shot.
A goal seven minutes from time condemned Eastbourne Borough to a 1-0 defeat at Havant and Waterlooville.
Borough seemed to be on course for a deserved point before James Taylor's 83rd minute strike settled matters.
The first half was a scrappy affair but Havant looked the better side going forward.
The impressive Taylor created two good chances for himself but he was off target on both occasions.
When Alec Masson headed over from a corner it looked like it could be another bad day at the office for Borough boss Garry Wilson.
But Borough came back into the game and Mark Goodwin should have put them ahead ten minutes before the break when he fired over the bar.
Borough were gifted a great chance on 53 minutes when keeper Gareth Howells cleared straight to Ben White but the striker's delicate chip drifted over the bar.
The game could have gone either way until Havant were awarded a free kick 20 yards out seven minutes from time.
Brett Poate hit a low drive which Lee Hook could not hold on to and Taylor followed up to claim all three points for the home side.
Withdean recorded a second successive win, this time beating Chessington United 1-0 in the Combined Counties League Cup.
Gavin Jones fired Withdean ahead ten minutes into the second half only for the home side to equalise but Florian Mateos bagged a winner in the closing stages with a tremendous strike.
Injury-hit Withdean gave a debut to former Albion trainee Conor McCurdy but he lasted just 20 minutes before going off with a knock.
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