What North American pro sports logos are absolutely irreplaceable?

[Special nobody]

Slight modifications aside, what logos could never be completely replaced?

 

[wayne p]

New York Yankees.

 

[Rich F]

Plenty of them- the Cowboys star, the Yankees NY, the Red Sox hanging socks (or the B), the Steelers 3 diamonds, the Celtics shamrock and leprechaun, The Canadiens "CH". Most of the older teams' logos are too well known to just change them.

 

[Rich F]

Plenty of them- the Cowboys star, the Yankees NY, the Red Sox hanging socks (or the B), the Steelers 3 diamonds, the Celtics shamrock and leprechaun, The Canadiens "CH". Most of the older teams' logos are too well known to just change them.