The 29-year-old Lupul was in front of the net during a power play midway through the second period when a slapshot from teammate Dion Phaneuf smashed into his arm. Lupul left the game immediately and did not return.
Lupul signed a five-year contract extension with the Maple Leafs on Sunday. He led Toronto with 25 goals and 42 assists last season and made his first All-Star team. Lupul had yet to score for the Maple Leafs this season at the time of the injury.
You've got to focus on playing good hockey. When we do that we give ourselves a chance to win games. Win games and then maybe we''ll have a chance at the end. You can't worry about something like (the division title) when we're not playing our best hockey down the stretch. We'll figure things out together the way we always do and get back on the right page.
— Blackhawks captain Jonathan Toews after loss to Flyers on Wednesday left them five points out of first place in Central Division