Last night the Caps went to Philadelphia, gave up two quick goals and then scored four of their own to tie up their best of seven playoff series at three apiece. Tonight they face the Flyers at home in the Phone Booth for the tiebreaker. Last night’s game showcased the Caps’ two biggest talents, with Alexander Semin and Alexander Ovechkin each contributing two points. Semin set up Nicklas Backstrom for the team’s first goal, before…