The third goal was wonderful play by Aaron Ramsey but the other two were preventable.
That is what we did with Aaron Ramsey and Glenn Loovens in the past.
Joe Ledley hit the bar in the first half, while midfield substitute Aaron Ramsey impressed after half-time.
The Carwyn James junior sportsman of the year title went to Caerphilly-born teenage football sensation Aaron Ramsey.
Rob Earnshaw relished the senior Wales striker role in Craig Bellamy's injury absence, while Aaron Ramsey also shone.
United's defense was struggling to contain Arsenal's midfield and Van Persie and Aaron Ramsey had both missed good opportunities.
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Wales were back on level terms thanks to James Collins as the defender turned in Aaron Ramsey's near-post corner.
Earnshaw then wasted a great chance before half time by dragging his shot wide from Aaron Ramsey's accurate pass.
Arsenal teenager Aaron Ramsey picked up the Young Player of the Year accolade.
But three goals in seven minutes turned the tie upside down, Van Persie making it 2-1 after Dunne fouled Aaron Ramsey.
Diaby was forced off injured shortly after and was replaced by Alex Song, who had been rested with Aaron Ramsey drafted in.
"He is young, quick and technically an outstanding player, " said Wenger, who also signed Wales teenager Aaron Ramsey earlier in the summer.
Meanwhile, Samir Nasri and Aaron Ramsey have joined the Gunners, who are now strongly being linked with Aston Villa midfielder Gareth Barry.
Toshack blamed a lack of consistency in his side and the loss of Aaron Ramsey, Joe Ledley and Dave Edwards from his midfield.
Davies has slipped down the Wales midfield pecking order due to emergence of Aaron Ramsey, David Edwards, Jack Collison, Joe Ledley and Andy King.
His preparations were not helped by the loss of midfield star Aaron Ramsey, who suffered an horrific leg break playing for Arsenal last weekend.
Indeed, there was a sense of inevitability about West Brom's opener as Reid easily evaded Aaron Ramsey to meet Brunt's set-piece with a powerful header.
The 54-year-old unearthed and played a major role in the development of Gareth Bale, Aaron Ramsey and Jack Collison, among others, into the top-level footballers.
Arsenal were dealt a severe blow just before the interval when goalscorer Fabregas, who had taken a hefty knock early on, went off to be replaced by Aaron Ramsey.
Wenger also revealed that midfielder Aaron Ramsey was showing good progress in his recovery from a double broken leg suffered in a tackle with Stoke's Ryan Shawcross.
There was still time for the Togo frontman to complete his hat-trick, Adebayor dashing onto debutant Aaron Ramsey's through ball and rounding the keeper before poking home.
Meanwhile, Aaron Ramsey is on course for his November return.
Football's Aaron Ramsey and snooker's Ray Reardon also won trophies.
It was an incident that was brought sharply back to the memories of Arsenal fans and players in February when Gunners midfielder Aaron Ramsey broke his leg at Stoke.
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Samir Nasri drilled in a second just before half-time, after a well-worked move, while teenager Aaron Ramsey smashed home a third on 69 minutes after some fine individual skill.
It was Arsenal who turned up the pressure - Howard scrambled to clear Aaron Ramsey's cross and then the keeper palmed away Bacary Sagna's corner as Arshavin shaped to shoot.
Aaron Ramsey has left for Arsenal, Cameron Jerome to Birmingham, Chris Gunter to Tottenham, Michael Chopra to Sunderland - before his return last season - and Glenn Loovens to Celtic.
Arshavin had a shot deflected onto the crossbar before substitute midfielder Aaron Ramsey sealed victory with 11 minutes left, cutting into the box and sliding a shot past goalkeeper Thomas Sorensen.
"We're delighted to have signed Aaron Ramsey, " said Wenger.
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