What is it called when a batter hits a single, double, triple and home run in one game?

In which year did the American League adopt the designated hitter? In which year did MLB introduce the pitch clock? In which town is the Little League World Series held? In which city is the College World Series played? What is the nickname for striking out four times in one game? What is an "immaculate inning"? In baseball slang, what is a "Maddux"? What does the statistic WHIP measure?