Randy Johnson had a career full of highlights on the way to the Hall of Fame, the best ones while an Arizona Diamondback. While his perfect game against Atlanta in 2004 is one that is hard to beat, and his performance in the 2001 World Series is one one for the ages, perhaps no game personified the essence of the Big Unit than May 8, 2001 against the Cincinnati Reds. For in that game he did what has only been done four other times in major league history: Strikeout 20 Batters in a 9 innings.