Windsor & Eton suffered another set back in their promotion push going down 4-2 away at Oxford City.
Kevin Chakodoza and Gavin Lane gave the home side a 2 goal cushion at half time with James Edgerley and Ricci Dolan levelling after the break before late strikes for Justin Merritt and Alex Stewart.
Windsor enjoyed good early possession but were soon behind when Kevin Chakodoza managed to head in Adam Durrant's 6th minute cross.
This also forced Windsor into an early change as Jamie Furmage had to helped from the pitch when he damaged ankle ligaments challenging Chakodoza to prevent the goal.
Windsor came very close to levelling the scores after half an hour when Ricci Dolan's free kick was turned onto the bar by former Windsor keeper Kieron Drake.
But it would be the home side who would add to the score first. Mark Jones' free kick from just inside the Windsor half was floated towards the penalty spot and Gavin Lane evaded everyone to head past Mazurek.
Into the second half and Windsor looked a different side with Dolan going close very early on.
They did pull one back ten minutes in when James Edgerley floated his free kick towards the far post and over the head of Drake straight into the net.
It was all square mid-way through the half when Drake could do nothing about Dolan's 30 yard free kick which sailed straight past the keeper.
It looked as if Windsor were on to take all 3 points but in the closing moments the match was snatched away from them.
A wonderful reaction save from Mazurek denied an offside Alex Stewart and from the corner Justin Merritt punched the ball into the net.
Into injury time and the match was well and truly settled when Stewart was left to line up an effort which he slammed past Mazurek.