Greiss made 36 saves and Rob Klinkhammer opened the scoring for Phoenix at 2:41 of the first.
Max Talbot scored the lone goal for the punchless Flyers, who have only six goals this season and dropped to 1-4. Coach Craig Berube lost his first game after leading the Flyers to a win in his debut. The Flyers' 2-1 win over Florida on Tuesday was their only multiple-goal game this season.
The Coyotes have won two straight games on the road after dropping two straight by a combined 10-2 score.
I've been getting frustrated lately, and the only thing keeping me sane was the team winning and other people stepping up and scoring. Then you just kind of let it go and realize you can end the series with one shot, that frustration goes away for a brief moment, and that's what happened.
— Montreal forward Max Pacioretty after scoring the series-winner in Game 4 -- his first career playoff goal -- to eliminate the Lightning and send the Canadiens into the second round