In his prime, you’d be hard-pressed to find a pitcher more intimidating to face than Randy Johnson. Six feet, ten inches tall with a fastball that could hit triple digits, and a slider that broke about six feet. In his career, Johnson threw a perfect game, a no-hitter, four one-hitters and six two-hitters. And then there was this game, tying the major league record for most strikeouts in a nine-inning game with 20. Johnson has also struck out 19 batters in a game before. Twice, actually. He’s struck out at least 15 batters 29 times, which is a major league record. A 10-strikeout game is one hell of a performance, but Johnson made that look easy. The Big Unit had at least 10 strikeouts in a game 212 times, which is three 10-strikeout performances shy of the major league record, held by the strikeout king himself, Nolan Ryan.