KANSAS CITY, Missouri, July 2 : The first signs may come before kickoff. A faster heartbeat. Deeper breaths. Perhaps a restless night's sleep. As England prepare for Sunday's World Cup last-16 clash with Mexico at the Azteca Stadium, they are confronting the reality of playing at 2,200 metres above sea level

England will head to the Estadio Azteca to face Mexico in the Round of 16 of the World Cup following their 2-1 victory over DR Congo in Atlanta

How much of an altitude advantage will the co-hosts have? And what can Thomas Tuchel's side do to counter it?