If you know what sport, position, and what night Dennis used to play that sport on.
If you know what sport, and what position John Panozzo used to play.
Finally, if you know what tragedy happened on the same day to the Minnesota Twins(it happened to one of its players, that player has a Chicago connection (clue)) and Styx. Truly, this was one of the worst days of my life as a HUGE fan of both.
I guess this could also be Styx trivia, the last question is a tough one!!!
Okay Yogi, I don't know if I got all of them right.
Dennis used to be on baseball league in Chicago. I forgot to find out what night (LOL). He used to play first base. Side note- I do know that he currently enjoys to watch baseball and football. He's a Bears fan -

John Panozzo, was a huge Hockey fan. Sorry, I don't know what position.
Yogi, I know you're a HUGE baseball and Styx fan. The only date I can come up with is July 16, 1996 when John P. died. The only thing in baseball I could find was that the Chicago White Sox beat the Minnesota Twins 11 to 2. Winning Pitcher- Wilson Alvarez Losing Pitcher - Brad Radke. I don't know what else happened in baseball on that day.
Did I get anything right? I'm hoping to make a nice bet with you during the next baseball season. I'll take the Brewers to have a better record than "your" team.
