Watford 0 Sheffield United 1:Danny Webber stepped off the bench to score a late winner for Sheffield United and break his former club Watford's hearts tonight.

Webber left the Hornets to move to United in March last last year, and in the 87th minute his header from two yards earned a victory that could prove crucial in both these teams' quests for Premiership survival.

United had created the better chances of a match short on quality, with Christian Nade and Rob Hulse both hitting the post, while Watford's Chris Powell was sent off in stoppage time for two bookings.

In a desperate attempt to give his team some potency, Watford boss Adrian Boothroyd took off McNamee and sent on Dan Shittu - a centre-back - to play alongside Henderson in attack.

Blades responded with a change of their own, former Watford forward Danny Webber replacing the ineffective Nade.

In the 76th minute, United were again denied by the post, Hulse shooting against it from three yards via a deflection off DeMerit following Mikele Leigertwood's cut-back.

Shittu was making a nuisance of himself in attack and saw his close-range effort blocked by Kozluk 11 minutes from full-time.

Three minutes from full-time, the deadlock was finally broken when Morgan's header was pushed onto the crossbar by Lee, and Webber nodded in the rebound from a yard.

To add insult to injury for Watford, Powell was sent off in stoppage time, collecting his second booking for a foul on Hulse