Eloi Pelissier was the villain of the piece as Catalans Dragons suffered a 20-18 defeat at fellow Super League title contenders Warrington Wolves on Friday.
A tense game looked to have swung decisively in Catalans' favour when Jodie Broughton capitalised on Todd Carney's break to crown a stunning length-of-the-field move, with the visitors already 18-16 to the good inside the final 15 minutes.
However, the try was disallowed as replays showed Pelissier had caught Kurt Gidley with a late and high tackle after the Wolves playmaker had put in the last-tackle kick that Catalans scored from.
Gidley kicked the resulting penalty to level the scores and the veteran Australian then displayed nerves of steel to land a 73rd-minute touchline penalty that sealed victory for the hosts.
Warrington, beaten by leaders Hull FC last week, leapfrog the Dragons into third. Both teams are two points behind Hull, who face Castleford Tigers on Sunday, and Wigan Warriors.
Adam Swift scored four tries as fifth-placed St Helens ended their losing run with a 48-16 victory over Hull KR. Saints were 12-0 down after half an hour and heading for a fifth defeat on the spin before winger Swift helped turn the tables in emphatic style.
A day on from the sacking of head coach Paul Anderson, Huddersfield Giants claimed a dramatic 31-30 win over Salford Red Devils with head of youth Andy Kelly in charge.
Rock-bottom Leeds Rhinos also won, for the second week running, a 32-6 victory at Wakefield Trinity Wildcats' sustaining the champions' slender hopes of making the top eight.