Hudler, who leads the Flames with 30 assists and 43 points, sustained the injury 19 seconds into the third period after taking a hit from Senators forward Clarke MacArthur and sliding hard into the boards.
It is unclear when Wideman sustained his injury. He didn't come out for the third period after playing 12:08 through the first 40 minutes. His final shift ended with 33 seconds remaining in the second.
The Flames announced each player would not return.
I've got a lot of experience and there's a lot of young guys. It's even making me excited a little more. It's kind of a new life. At my age, I feel like I know a lot of things what to do, but I just cannot do it anymore. It's a lot easier to tell them what to do because they've still got the legs and hands to do it. I just know things, but I cannot do them anymore.
— Jaromir Jagr after making his Panthers debut in a win against the Sabres on Saturday