Conversation so far:
What was the Pine Tar incident?
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.
Was that length illegal?
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.

Question: What happened to Brett after that?
Self-contained rewrite: What happened to George Brett after the Pine Tar Incident?