The Arsenal star was in fine form, with his double helping the Gunners to a win over Crystal Palace

GettyJack Butland | Stoke CityNo goalkeeper made more saves than Butland in the Premier League on Boxing Day (seven, level with West Ham's Adrian).AdvertisementGetty ImagesTrent Alexander-Arnold | LiverpoolAlexander-Arnold (19 years, 2 months, 19 days) is the second youngest defender to score for Liverpool in the PL after Jamie Carragher (18 years, 11 months, 21 days).GettyCesar Azpilicueta | ChelseaSince the start of last season Azpilicueta has racked up 10 Premier League assists — more than any other defender.Getty ImagesNicolas Otamendi | Manchester CityOtamendi completed 122 passes for Man City in a 1-0 win at Newcastle – seven more than all the outfield players of Newcastle managed combined (115).