Yeah, sad to hear about Bowie.
Looking back at this era, while I agree that it was a special time for American tennis, I choose the word "supernova" as an image that implies a last and dying blast of a previously brilliant star. American tennis was always great, going back to Bill Tilden, with only short lulls. But even during the relatively dry spells like the late 60s and early 70s, there were very good players to carry the baton (e.g. Arthur Ashe, Stan Smith). From the mid-70s until mid-00s, there was always at least one great American: Connors to McEnroe to Courier, Sampras and Agassi. Agassi passed the baton to Roddick, but it was a noticeable decline in greatness, and the Roddick to...John Isner? I like Jack Sock, but it is a sad state of affairs when he's the most exciting American on tour. Still, there's hope on the horizon in Francis Tiafoe, Taylor Fritz, and perhaps Jared Donaldson. But I'm getting ahead of myself.