Conversation so far:
What was the Pine Tar incident with George Brett?
The umpires measured the amount of pine tar, a legal substance used by hitters to improve their grip, on George Brett's bat; the pine tar extended about 24 inches.
Was the pine tar extending about 24 inches on George Brett's bat illegal?
Yankees manager Billy Martin cited to the umpires a rule, stating that any foreign substance on a bat could extend no further than 18 inches from the knob.
What happened to George Brett after the pine tar on his bat was measured?
The umpire, Tim McClelland, signaled George Brett out, ending the game as a Yankees win. Brett charged out of the dugout toward McClelland and had to be physically restrained.
Was George Brett kicked out of the Pine Tar Incident game for that?
Amid much controversy, the game was resumed on August 18, 1983, from the point of George Brett's home run, and ended with a Royals win.

Question: What team was Brett playing for at the time?
Self-contained rewrite: What team was George Brett playing for at the time of the Pine Tar Incident?