Crossword puzzle clue "it precedes the last words of the four longest puzzle answers"

It precedes the last words of the four longest puzzle answers

Deg. of the professional who may instruct you to do the last words of the four longest puzzle answers

Bonus, and a word that can precede the last words of this puzzle's four longest answers

Org. that has four teams with non-plural nicknames, which begin this puzzle's four longest answers

Word that can precede the last word of the four longest puzzle answers

R. Kelly hit whose last title word is aptly rhymed with "sky" in the lyrics ... and a hint to the starts of the other four longest puzzle answers

Zamboni-prepared surface, and word that can follow the last word of the puzzle's four longest answers

Newsstand buy, for short—one begins each of the four longest puzzle answers (and also ends the last one)