Do I really have to explain why any World Series title before Jackie Robinson deserves an asterisk?
Old college basketball titles, as I mentioned above, have the following issues:
1) Prior to the early 60’s many conferences had “gentlemen’s agreements” about how many black players teams could have.
2) the NCAA tournament had many structural issues prior to the mid 70s that made it not really a true national championship.
3) prior to the latter half of the 60s, the best eastern and independent teams often preferred the NIT because of the New York media. Marquette, in 1970, was the last team to turn down an NCAA bid to play in the NIT.