It took a Connacht transgression for Scarlets to get into the lead when Jones slotted over a 62nd-minute penalty goal.
In an action-packed first half Ponty began superbly - going into the lead after four minutes with a 22-metre penalty goal from full-back Brett Davey.
First the outside-half planted a penalty goal and followed that up by converting his own try after latching onto the end of full-back Anthony Floch's kick ahead.
But Connacht responded with a penalty goal for Keatley three minutes later and then Carr cut inside to complete his treble and put the Irish side 30-23 up.
The Blue Sox, who have enjoyed two rare successes at Odsal in the Super League era, threatened to spring another surprise when stand-off Martin Pearson put them in front after only three minutes with a penalty goal kicked from two metres inside the Bradford half.
"They were giving us the run-around, so much so that I risked being booed out of the ground by asking David to kick a penalty for goal before half-time - we were absolutely shattered!"
And, as conditions deteriorated, Sinfield's second penalty and drop goal were the only scores after the break.
Britain spent the next 15 minutes defending and the predictable outcome was another penalty-corner goal, with Ribas' low drag flick going through Mason's legs.
After Sexton hit an upright with his first penalty shot at goal, the outstanding young prospect's slick distribution was on target to help launch the move that ended with the game's opening try.
Robinson hit the post from the resulting penalty kick at goal, but the ball fell kindly to the Blues and they eventually created an overlap for Selley to dive over in the right corner.
Arsenal had earlier taken a first-half lead in the match courtesy of an Andriy Arshavin goal, only to see United hit back to take the lead through a Wayne Rooney penalty and an own goal from Abou Diaby.
The visitors began full of confidence and Francois Steyn kicked a long-range penalty in the sixth minute to put them 3-0 ahead, but proceeded to miss a drop goal and further penalty chance.
Maloney did not have too long to dwell on his miss since he atoned for his poor penalty with a wonderful goal.
South Africa's points came from Morne Steyn with a penalty and drop-goal as well as converting a fine try by captain John Smit.
The Warriors had to come from behind, having trailed 6-0 just before the break following an early penalty and a drop goal from Nick MacLeod.
With Luke McAlister notching a penalty and a drop goal for Sale to Brock James' two penalties, David Doherty's try separated the teams at the break.
Parks, the Magners League's top points scorer, ensured the scoring immediately went in Glasgow's favour with a penalty and drop-goal following a line-out in the home 22.
The former Spurs striker smashed home a rebound with just 34 seconds gone, and added a penalty for his 23rd goal of the season after Kyle Walker handled.
Jones missed his conversion but slotted a penalty to extend the Worcester lead, before Wasps, who had seen Walder miss with a penalty and drop-goal, eventually found some fluency.
Tom Wood gave Worcester hope of a shock when he crossed for a try but Walker missed the conversion and Staunton made him pay with a drop goal and penalty.
The Australians soon regained control of both territory and possession but more ferocious Scottish defence meant they could not cross the hosts' line, and a missed penalty and drop-goal from Giteau meant the two sides were locked together at 3-3 at the interval.
The penalty was the first goal City have conceded this season and it also ends their 10-match unbeaten run against the Black Cats, but City boss Roberto Mancini could have few complaints after his side were outmuscled in the second half by the determined Wearsiders.
Wigan scored their consolation goal with virtually the last kick of the game, Baines drilling his penalty down the middle of the goal after Silvestre had fouled David Wright.
With first-choice penalty takers Adrian Mutu and Stevan Jovetic both injured, Vargas took responsibility to score his first goal of the season at the Stadio Artemio Franchi, placing his penalty into the top left-hand corner of the goal.
He also scored a short-handed goal on a penalty shot in the season opener.
Captain Berrick Barnes added a penalty and a drop-goal before flanker Scott Higginbotham went over in injury time.
Wayne Rooney, who missed a second half penalty, scored the only goal of the game after nine minutes.
The impressive Thomson gathered the ball on the edge of the Celtic penalty area and ran towards goal.
The Reading player netted an early penalty for his fifth international goal and he was a constant threat.
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