Here is a challenge open to all.
The first person to correctly answer the following question will receive a bonus entry in an upcoming World Series Playoffs Contest I will be hosting.
Please post your answer in this thread.
Among the "Big Four" North American professional sports leagues, there are several pairs of team nicknames that differ by only one letter.
Name at least four other pairs.
Please note that variations of nicknames are not permitted (for example, you can't shorten the Blue Jays to the Jays to go with the Rays or the Chargers to the Bolts to go with the Colts).
Good luck and have fun!