Manchester United icon Paul Scholes produced a typically polished performance against a Bayern Munich legends side on Sunday afternoon - but the 50,000-strong crowd inside Old Trafford were left speechless after the retired midfielder inadvertently set up Alexander Zickler with an inexplicable back-pass.
Scholes attempted to play the ball back to Edwin van der Sar but failed to spot Zickler, who rounded the Dutch goalkeeper before slotting the ball into the empty net. (Scroll down to see the video, and skip to 4 mins 35 seconds).
That Scholes, even two years after retiring, is still so breathtakingly accurate with his passing - as he demonstrated for the rest of the match on Sunday - made his uncharacteristic error so surprising.
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But, fortunately for Scholes, his mistake didn't prove too costly. Manchester United Legends beat their Bayern Munich counterparts 4-2, with the goals coming from Louis Saha, Dwight Yorke, Andy Cole and Jesper Blomqvist.
Zickler and Michael Tarnat scored Bayern's goal, but in the end it was a relatively comfortable victory for the Red Devils, who won the two-legged tie 7-5 on aggregate.
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Could Paul Scholes still do a job?
After the match, social media was awash with comments from buoyant Manchester United fans expressing their belief that Scholes could still cut it in the Premier League.
The 40-year-old's passing, barring that first-half error, was typically crisp and accurate over both short and long distances.
While Scholes, who retired for the second time at the end of the 2012-13 campaign, would no longer be capable of holding down a place in Manchester United's first team - there's little doubt he could play elsewhere, potentially in a lower league, if he felt the desire.
It was always thought that Scholes would finish his career with his boyhood club Oldham Athletic - and perhaps the League One outfit will attempt to lure the former England international out of retirement for a third time after his performance at the weekend.
Scholes, though, appears content with life post-retirement and now has commitments with various media outlets, lending his views and opinions on both television and in newspapers.
That he opted for a career in broadcasting after hanging up his boots was an even bigger surprise than his mistake on Sunday - but only just.
Manchester United fans: could Paul Scholes still do a job for the Red Devils? Have your say in the comments below!