The hosts looked set for an eighth league defeat when Matthew Etherington drove Stoke ahead from an acute angle.
The conversion was executed superbly by the left-footed Parra from an acute angle.
Laidlaw landed a superb conversion from an acute angle out on the right to narrow the gap to three points.
And Gallen showed his striker's instinct with his second, bursting through the Harriers defence to fire home from an acute angle.
Villa led 2-0 at the break through a Richard Dunne header and a finish from an acute angle by Darren Bent.
Worgu sealed the victory with ten minutes remaining after taking advantage of a defensive slip-up to score from an acute angle.
He almost scored with a glancing header and forced a good save from Kiely with a driven shot from an acute angle.
It went from bad to worse for Arsenal when Bent then finished from an acute angle after his initial shot had been beaten away.
Wenger also hailed Samir Nasri, who capped an excellent performance with a superb goal, turning three defenders before firing in from an acute angle.
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Dindane was denied by the legs of Craig Gordon, Jamie O'Hara almost went through on goal and Diop lashed into the side-netting from an acute angle.
United started the second half as they did the first and Sandaza forced Boruc to make another good stop with his foot from an acute angle.
Derek Townsley had a chance to snatch a goal back before the break but the Hibs midfielder shot at the legs of Niemi from an acute angle.
Kevin Campbell threatened for the Baggies, stinging Jamie Ashdown's fingers with a shot from an acute angle, while Aliou Cisse drove wide for Pompey from 25 yards.
BBC: SPORT | Football | Premiership | West Brom 2-0 Portsmouth
Michael Eneramo poked a a cross into the net 10 minutes from full-time to put the home side ahead again only for Darragi to level from an acute angle.
Bolton stepped up the pace and Ivan Klasnic curled his shot just wide before testing Burch from an acute angle and hooking a shot wide after being set up by Taylor.
Midfielder Nader Abdussalah played in Osman with a clever pass which Afful failed to clear and the 30-year-old slotted the ball into the net from an acute angle with only four minutes remaining.
Ja added the third in the 53rd minute with a touch of individual brilliance, twisting past two defenders and hitting the ball home on the outside of his foot from an acute angle.
His deft chip played Rooney through but the striker could not find the target from an acute angle, while several times the veteran midfielder caught left-back Cole out of position with raking cross-field passes.
Burnley started strongly in the second half, Robbie Blake forcing a good low diving save from Cudicini, and later hitting a post with a rebound from an acute angle after the goalkeeper fumbled a free-kick.
The Reds eventually rose from their stupor and Gerrard played in Torres, who chose to shoot from an acute angle instead of crossing for his team-mate and saw his shot turned away by keeper Ben Foster.
Ian Maxwell found space on the left wing, delivered a cross that found the winger at the back post and McGinn controlled it on his chest before drilling a low shot into the net from an acute angle.
However, the home crowd's relief was shortlived as Ronaldo beat the offside trip to gather Mesut Ozil's fine pass down the right, and the world's most expensive player netted his 54th goal this season from an acute angle.
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But it was Barcelona who approached half-time in control and Messi underlined their dominance with a surging run which took him away from four players before his shot from an acute angle was partly fumbled by van der Sar.
Spurs were given a lifeline when Jermaine Jenas produced a surging run, found Bentley and his pass teed-up Campbell, who calmly slotted in first time with his right foot from an acute angle on the edge of the area.
Beckford, who is a target for a number of leading clubs, took advantage of defensive indecision to latch on to a long ball from Jonny Howson and hold off Wes Brown before beating Tomasz Kuszczak from an acute angle.
Smith was also causing problems, jinking between two Wolves defenders before squaring for Dindane, but his first-time poke with the outside of his right boot was pushed away by Hennessey and Smith smashed his follow-up from an acute angle wide.
Liverpool briefly threatened when Torres fired over the bar from an acute angle and Chelsea suffered a blow when captain John Terry received a yellow card for a late challenge on Reina, meaning he will be suspended for the second leg at Stamford Bridge next week.
Rooney was fit to return to United's line-up after missing two games with an ankle injury - and he was in the thick of the action right away as he raced on to Dimitar Berbatov's pass only to send a presentable finish wide from an acute angle.
Anelka robbed the hesitant Sebastien Squillaci, and even though the striker rounded Fabianski the angle was too acute and the finish rolled agonisingly wide for Chelsea.
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