There is no question that Foster is No.1 keeper at the club as well as being one of the best in the Prem. However, football is a squad game, and I'm sure TP selected Myhill so as to show he's still part of the squad. If players go a whole season without ever being selected, you start getting ruptures in the team spirit, whereas in the end you need a dressing room where everybody is united behind the team .
Being number 2 keeper must be incredibly difficult, because, you know you are going to be on the bench the vast majority of the time, yet you still have to be physically and mentally prepared to step in at any minute due to injury or ill discipline.
I always thought Myhill handled this very well, but Saturday he just didn't seem prepared. Can't blame Pulis for resting Foster, as Myhill has always been adequate, if not outstanding, when called upon in the past.
Probably time to get someone in who is more hungry and can genuinely challenge for the number 1 jersey, rather than content to warm the bench.