Manchester City manager Pep Guardiola says he does not understand why his side were denied a late penalty in their 2-2 draw with Tottenham.
Spurs defender Kyle Walker admitted after the game that he pushed Raheem Sterling in the box with the score at 2-1, but referee Andre Marriner let play continue.
Guardiola said: "We missed a lot of chances and when that happens the influence of the referee is higher.
"But the rules here are the rules."
The Spaniard added: "Maybe one day Mike Riley might explain them to me. When a player is pushed, I would like to understand.