The other two, in 2008 and 2013, were Liverpool.
Liverpool FC can guarantee its Merry Christmas by leaving the Wolves' den with three points.
Salah clipped a cute ball over Wolves' defence after they'd cleared a corner and Van Dijk was on hand to tap-in.
Van Dijk was tasked with keeping tabs on Adama Traore, with the Wolves winger renowned for his Olympic sprinter speed.
Liverpool manager Jurgen Klopp played down the significance of being top at Christmas, suggesting his team may need 105 points to win the Premier League.
Nuno Espirito Santo's side had shown in previous games against the top six this season that they're more than capable of competing against the best in the Premier League, and the Midlands club caused the Reds a number of problems, especially in the first half.
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For the second time in as many months, Nintendo's PR push focused on the US only and didn't provide any updated global numbers. Nintendo said that since the system's launch in March 2017 to November 2018, Nintendo sold more than 8.7 million units.
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The game started with a bang, when Dele Alli released Heung-Min Son behind Arsenal's backline. "I am happy with the performance, but not the result".
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But he cautioned against a second referendum , saying it would "continue the uncertainty for many more months". Liberal Democrat leader Sir Vince Cable accused Mr Corbyn of "bottling" a real confidence vote .
The Egyptian winger saw his initial free kick come to nothing, but carried his run on into the box and impudently flicked his finish past Rui Patricio with the outside of his foot after Fabinho had exchanged passes with Sadio Mane and cut the ball back.
"When I came here I already had an idea about how the Premier League would be, but the difference is the physically intense nature, the difficulty of every single game, whether you're playing against a team who are at the top or the bottom".
"In this period, we don't train too much, but we know how to grind things out and keep things tight".
Only once in the previous nine seasons has there been a one-point gap at the top at Christmas - in 2013-14, when Liverpool and Arsenal were just ahead of City.
"It does look like we have a real title race and we haven't had that for a few years really".