Random thought about the Yankees relating to the Celtics (was watching both simultaneously the other night):
They have a similar number of retired jerseys (Celtics with 23 including LOSCY, Yankees with 24 but with #8 and #42 being retired twice), but I think it's interesting that the Celtics still have so many single digits not retired that were available for guys on the current roster, with a healthy Porzingis the C's entire starting lineup would consist of guys wearing single digits, while the Yankees have every number 1-10 retired (#0 is still available though).
If you didn't know better, and told someone the C's have so many numbers retired that guys have to wear weird numbers, would be kinda shocked to see a the starting lineup walk out wearing such normal, low numbers.