Robinson kicked his third penalty for the visitors and Mike Tindall added a third try late on.
They got a third try in the 67th minute when a cracking break was finished by powerful Aussie Rocky Elsom.
Matt Giteau added a third try, with Stirling Mortlock kicking 10 points to put them top of the Tri-Nations table.
Connacht added a third try just before the break when Keane sliced through for his first league try in three seasons.
They did get a third try when replacement Keogh finished off a surging move in the 76th minute, but a fourth touchdown eluded them.
It got better for the home side after the break when centre Dalle Cort went over for a third try just before the hour.
Scarlets should have added a third try soon after the restart, but Bowen ignored a two-man overlap and was dragged down short of the line.
Kevin Brown was denied a third try for pushing and almost instantly Benji Marshall found the tightest of gaps to score in the right-hand corner.
When winger Ryan Hall plucked the ball out of the air and sent his centre Senior over for a third try, the visitors held a flattering 14-10 lead.
With Salford still to get going, the Tigers claimed a third try in the 16th minute when Huby crashed over from close range from Rangi Chase's short ball.
Barnett pulled one back for the Eagles with his second try, to which Tomkins responded with a third try, Richards adding the extras to take Wigan to the 50-point mark.
And a swift break yielded a third try inside the opening 11 minutes, with Keith Senior's pass giving Hall the chance to cut back in off his wing and dart over.
When Kearney took Jones' neat pass to brush off the weak challenges of Brett Kimmorley and Robbie Ross to claim a third try on 19 minutes, the platform for victory was complete.
Cas had Chase sin-binned for holding down Jonny Lomax after he denied him with a brilliant try-saving tackle and Saints took advantage with McCarthy-Scarsbrook forcing his way over for a third try in five minutes.
The visitors eventually made their superiority count six minutes before the break when substitute Fa'asavalu took Sinfield's inside pass to get through a gap for a third try and the Leeds skipper kicked his second goal.
The coltish Croft had the ball knocked from his grasp as he tried to dive over in the corner but the Tigers had scented Twickenham and they booked their passage to London with a third try.
But when Warrington ran in a third try four minutes from half-time, it already looked a long way back for the Super League champions - and this time they had a justified sense of grievance at the award of the try.
Nine minutes later, skipper Tony Grimaldi offloaded from the tackle for scrum-half Will Robinson to send centre Steve Collins over and Hull went in front on 64 minutes when prop Luke Felsch profited from a lucky ricochet to grab a third try.
After pulling it back to 18-12 down at the break, the game appeared to be turning Leeds' way when England winger Ryan Hall took Keith Senior's pass to grab a third try 10 minutes into the second half to cut gap to just two points.
Elima then followed this up with a nifty sidestep, and sensing that they could at least make a game of it in the second half, the Dragons went all out for a third try, a commendable approach seeing as they had lost captain Greg Bird through injury at half-time.
Halfpenny rewarded the faith shown in him with a third Test try and then added a crucial fourth, plus a penalty, in the next round's win over England.
On the stroke of half-time, Gloucester centre Fuimaono-Sapolu went over for a third Gloucester try to make the score 19-11.
Cipriani made the score 15-0 after just 18 minutes with a penalty before delivering a superb inside pass to Sackey for a sparkling third try.
The youngster rewarded the faith shown in him with a third Test try and then added a crucial fourth plus another penalty in the next round's win over England.
The fly-half may not have been in the best of form going into the game but he was playing beautifully and nearly set up a third New Zealand try with a lovely dummy through the England midfield.
President Bush managed to land a heavy for this third try at picking a treasury secretary.
Munster notched their third try a minute into the second half as Wallace ran from the edge of Sale's 22 before stretching to score after Juan Martin Fernandez Lobbe had lost possession.
The CPS has a week to decide whether to try the men for a third time.
It has three days to do this before the Syriza Party gets a shot and then the third place, Pasok Party gets a try.
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