Manchester City and West Ham meet in the Premier League Asia Trophy for the first game of their pre-season tours of China on Wednesday.
It has previously been unusual for two sides from the same league to meet during pre-season, but with the emergence of tournaments and tours of different countries it has become more common for teams at the top level to play each other before the season commences.
The winner of this clash will play in a final on against either Newcastle or Wolves, who also play each other on Wednesday.
City are without a few of their South American stars.