I'd say that it depends on how you say it and what you emphasize.

If you carry on about how he scored 13 points and you had him on your bench, and then add in passing that you'd like someone to kill you, then I'd say that it would qualify as a whine.

But if you mostly emphasize how you would like someone to kill you without going into a great deal of detail as to the "why", and mention Mauer as the reason only in passing, then I'd say that it does not qualify as a whine.