Oilers switching goalies for pivotal Game 4 vs. Canucks

(Photo credit: Perry Nelson-USA TODAY Sports)

The Edmonton Oilers only trail their Western Conference semifinal series 2-1 heading into Tuesday's home clash against the Vancouver Canucks.

Yet the Oilers are staring at two big, age-old questions about their team -- goaltending and depth -- as they feel the pressure to pull even before the series gets out of hand.

Coming off Sunday's 4-3 home loss, coach Kris Knoblauch ha