The two teams have something else in common besides coming into the league the same year.
The New York firm has designed mascots and logos for universities in Louisiana, Arkansas and Massachusetts as well as Major League Baseball teams the Florida Marlins and Colorado Rockies.
Whether Phoenix Design Works designed both of the teams logos and/or the teams mascots, I can't say. I do like both of the teams logos. As for the mascots, Billy the Marlin has reached a near legendary status, thanks to ESPN and other media outlets. Dinger, on the other hand, hasn't received quite the same national recognition but that is probably only because Billy has a better publicist. If you are unfamiliar with the Rockies mascot, Dinger, here is a picture.
This is another installment of..... Fun facts to know and tell. And once again I don't think this knowledge will be much of an assistance on Jeopardy.