Ifil was sent in for an early bath in the 55th minute after the Englishman followed through on an aerial challenge with Samaras and delivered a kick at the Greek's thigh that was spotted by the stand-side assistant referee.

BBC: Sport - Football - Celtic 3-0 Aberdeen

It bounced down off the upright and the referee's assistant allowed it to stand despite the shot clearly not crossing the line.

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West Ham's players protested that the Colombian had bundled the ball home with his hand at the far post but, after consulting his linesman, referee Alan Wiley allowed the goal to stand.

BBC: West Ham 3-2 Wigan

Bradford hooker Terry Newton was the first player shown the yellow card after just two minutes when he was mistakenly penalised for a high shot on stand-off Briers by referee Ashley Klein.

BBC: SPORT | Rugby League | Super League | Warrington 27-4 Bradford

The match was nearly marred by a fighting, but a tense stand-off was defused by the intervention of referee Uriah Rennie and other players.

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And, in championships, a fourth official is appointed to stand in if there is conflict of interest with a judge or referee.

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Wolves' players complained to referee Mark Clattenburg that Varney had used an arm to lever himself above Hahnemann but the goal was allowed to stand.

BBC: Blackpool 2-1 Wolves