Conversation so far:
What is the pine tar incident?
Yankees manager Billy Martin cited to the umpires a rule that stated that any foreign substance on a bat could extend no further than 18 inches from the knob.
What happened after that?
The umpires measured the amount of pine tar, a legal substance used by hitters to improve their grip, on Brett's bat; the pine tar extended about 24 inches.
What did he do?
The home plate umpire, Tim McClelland, signaled Brett out, ending the game as a Yankees win.
What did Brett do?
an enraged Brett charged out of the dugout sprinting directly toward McClelland and had to be physically restrained by two umpires and a Royals coach.
What were the consequences?
The Royals protested the game, and American League president Lee MacPhail upheld the protest.
What was the resolution?
Amid much controversy, the game was resumed on August 18 from the point of Brett's home run and ended with a Royals win.
What was the impact?
In 1985, Brett had another brilliant season in which he helped propel the Royals to their second American League Championship.
What else changed as a result?
CANNOTANSWER.
Did he contineu to play after?
He was MVP of the 1985 playoffs against the Toronto Blue Jays, with an incredible Game 3.

Question: What else did he do?
Self-contained rewrite: What else did Brett do in addition to his MVP playoff series in 1985?