Manchester City manager Roberto Mancini accepts decisions will go against his club - because referees can also get tired.
In recent games City have conceded a costly penalty in Wednesday's Carling Cup semi-final exit at Liverpool and seen striker Mario Balotelli etrospectively banned for four matches for violent conduct for an offence not punished on field by the referee against Tottenham last weekend.
City have also had to deal without captain Vincent Kompany for four matches after a controversial sending-off, and Mancini said: "I think playing a lot of games is also difficult for them (referees). The refs sometimes are tired - to play every two or three days is difficult for the players, and for the referee. The referee is like me, like the players. They can be tired sometimes."
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