Conversation so far:
What happened in 1988?
In mid-1988, Hogan wrestled at house shows in singles competition with his "War Bonnet", a red and yellow gladiator helmet with a fist-shaped crest.
did he win?
CANNOTANSWER.
who was mega powers?
Together, Hogan, Savage, and manager Miss Elizabeth formed a partnership known as The Mega Powers.
what did they do with the mega powers?
After Savage became WWF World Heavyweight Champion at WrestleMania IV, they feuded with The Mega Bucks.
what happened with the mega bucks?
defeated them at the main event of the first SummerSlam.

Question: what happened in 1989?
Self-contained rewrite: What happened to Hulk Hogan in 1989?