Rondon strikes bitter blow to Van Gaal's 10 men

United came into the game buoyed by four wins in a row in all competitions, but its task at The Hawthorns was made far tougher when Juan Mata picked up the first Premier League red card of his career with two quick-fire bookings in the first half.

Juan Mata is sent off for Manchester United against West Brom.

Salomon Rondon scored the only goal of the game as West Brom defeated 10-man Manchester United 1-0, dealing a blow to the visitor's top-four hopes.

United came into the game buoyed by four wins in a row in all competitions, but its task at The Hawthorns was made far tougher when Juan Mata picked up the first Premier League red card of his career with two quick-fire bookings in the first half.

Louis van Gaal's side responded well to that setback and came close to opening the scoring through young Marcus Rashford as it looked to counter West Brom, which struggled to carve out many meaningful chances despite its advantage.

Yet Tony Pulis' men found their breakthrough midway through the second half thanks to Rondon's clever finish from close range – his fourth goal in six league matches. > Read: Fletcher denies trying to force Mata red card

Van Gaal's side pushed for an equaliser, but diligent West Brom defending ensured the visitor remains sixth in the table and three points behind Manchester City in fourth, having played a game more.

United, who welcomed back Chris Smalling, Matteo Darmian and Michael Carrick to the starting line-up, started brightly, but Craig Dawson missed the first decent chance when he headed wide following Rondon's teasing cross.

The home side began to look an increasing threat on the break and from set-pieces as United laboured in possession, with belief among the home fans growing further when Mata was sent off for two yellow cards picked up in the space of three minutes – the first for blocking a quick free-kick, the second for a late swing of his left foot to bring down former team-mate Darren Fletcher.

United was forced onto the defensive, but, barring a low drive from Saido Berahino which David de Gea saved comfortably, West Brom was struggling to make its numerical advantage count. > Read: Van Gaal angered by 'unnecessary' loss

Indeed, it was United who next came closest to breaking the deadlock just after half-time, as Rashford's low shot from the edge of the area deflected narrowly wide of Ben Foster's left-hand post after a strong run from Anthony Martial, before Jesse Lingard clipped the top of the net with a looping drive from 25 yards.

Berahino stabbed substitute Sebastien Pocognoli's cross narrowly over the crossbar, but United failed to heed the warning as the full-back picked out Rondon in space just six yards out and the Venezuelan controlled the ball superbly before drilling low into the corner past De Gea in the 67th minute. > Watch: My opinion doesn't count - van Gaal

Van Gaal threw on Memphis Depay in hope of a similar comeback to that produced by 10-man Liverpool at Crystal Palace earlier in the day, but West Brom held on for a win that takes it to within a point of the top 10 and leaves United facing an uphill battle to keep pace with the top four.

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Key Opta Stats

- This was West Brom's first competitive win against Man Utd at The Hawthorns since a League Cup clash in December 2003.

- All 10 of West Bromwich Albion’s Premier League wins this season have been by a one-goal margin.

- Louis van Gaal’s side has won just one of its last eight Premier League away games (W1 D3 L4).

- Salomon Rondon has scored more goals in all competitions this season than any other West Brom player (8).