With Sunderland always looking sharp on the counter-attack, David Bellion surged his way to the dead-ball line.
Ian Humphreys pounced for a second try, punishing Aironi's blunder in trying to usher the ball over the dead ball line.
Jones later sent a clearance over the dead-ball line as he sought to take advantage of the wind at his back.
Whitehead capitalised on Smith's failure to clear the danger caused by Sykes' grubber kick, stretching out to get the touchdown inches from the dead-ball line.
But the Irish wilted in the closing minutes, and after Scelzo had forced his way over Bartolucci won the race for a kick ahead to touch down inches inside the dead-ball line.
Farrell's kick off was going to fly out of play on the full but the New Zealander caught the ball and carried it over the dead-ball line to put his side under pressure.
Hull, bidding for a first away win over Wigan for six years, looked on course when England winger Briscoe touched down Horne's kick just inches from the dead-ball line on 17 minutes, Tickle's conversion making it 10-4 at half-time.
England were awarded a penalty close in and Tonga were retreating in expectation of a kick at goal when Wilkinson suddenly fired a high ball out to the right and Sackey collected brilliantly and just touched down short of the dead ball line.
Skipper Brad Fittler then raced over straight from a scrum to close the gap to just eight points and, in a nailbiting finish, centre Russell Richardson had a try ruled out for putting his left hand on the dead-ball line before grounding the ball.
And they had to survive some nervy moments defending their own try line before another stolen ball at the Pirates line-out allowed them to clear their lines.
He leaped over the Ravens' stout defensive line and extended to get the ball over the goal line on a crucial 4th-and-goal that gave the Patriots their 23-20 edge early in the fourth quarter.
Possession of the ball is determined by getting the "line of the ball, " or path as it travels on the field, on a player's right.
Three minutes later Evans was denied again when defender David McSweeney cleared the ball off the line.
Moments later Puletua crashed over from close range, squeezing the ball over the line despite plenty of attention.
After Glenn Morrison dropped the ball over the line for the visitors Bradford responded with two quick tries.
Harlequins managed to string together one potent attacking move but centre David Howell spilled the ball over the line.
Birmingham were unlucky when a header from Liam Ridgewell was disallowed late on despite the ball crossing the line.
But, fortunately for the SPL newcomers, Simon Mensing was on hand to clear the loose ball off his line.
Sidibe's shot beat Walker, and despite Elliott's best efforts to clear he could only help the ball over the line.
The ball crossed the line, and players and fans believed Lampard had scored a goal - but it was disallowed.
Hit the ball below the line a metal plate that makes a dispiriting sound when you do and you lose that point.
Scrum-half Farrell received the ball from a line-out just outside the Swansea 22 and scythed through the All Whites pack untouched.
Another try for centre Steve Collins was disallowed after the video referee confirmed that he had dropped the ball over the line.
Gary Wilson battled to 19 but played for an off-spinner from Harbhajan Singh when instead the ball held its line and uprooted the off pole.
However, Radlinski could do little to stop substitute Tony Puletua as he took possession at the tackle and forced the ball over the line.
Thompson got the final touch from an Aaron Hughes header to take the ball over the line and complete the scoring on 87 minutes.
Blair was hauled down just short but Molitika was on hand to place the ball over the line through a forest of legs and arms.
Three minutes after the hour, the crucial score arrived after Paddy Wallace carried the ball over his line under pressure from the advancing red hordes.
BBC: Paul Steinmetz gave Ulster the perfect start at Ravenhill
The tie looked over when Kluivert forced the ball over the line - but he had been felled by Leboeuf and the penalty was awarded.
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