At almost every Premier League club there is an ever-present player.
Sometimes, injuries and suspension can hit a team heavily but you generally need a few stars to be fit for the whole campaign to maintain the rhythm of the starting XI.
This, though, is getting harder and harder, with both Manchester City and Liverpool resting players in their league games at the weekend as they focus on their huge Champions League quarter-final second leg clash.
But which superstars have spent the most time on the pitch in the Premier League at each team this season?