I want to put this bet in perspective. first, no team likes to lose their last "home game" of the regular season in front of their "home crowd". Both Toronto and Tampa like any team wants to enter the playoffs winning their last, but also on a "healthy note", who gets the ice time tonight? You will probably see a lot of Mathews looking for his 70th. If he gets it early, you won't see much of him after that. I just think Tampa wins, home crowd advantage.
The Pens have nothing to play for, their steam has run out, depressed, after the late great effort they put forth and not making the playoffs for the first time in 16 years. The blues, again nothing to play for and even if Dallas rest's the majority of their starters, they still have the depth to beat them.
If you have noticed AZ since getting the word that their moving to Utah, for whatever reasons have been playing better hockey, The Oilers will definitely be resting key starters so I wouldn't be surprised if the Yotes win outright or easily cover the PL. This game means absolutely nothing to Edmonton, they still finish 2nd their division.