#4 was my primary until high school, in honor of Joe Dumars.
I was #42 my freshman year because I had the last pick being an underclassman playing up.
Then my sophomore, again I had last pick - between #10 and #22. First I opted for 10 in honor of Pistons-era Dennis Rodman, then at the last second I switched to 22 for no real reason other than thinking it looked pretty cool. I wore 22 from that day forward.