Only 24 men have won 300 games in the big leagues, and all who are eligible have been inducted into the Baseball Hall of Fame. The only 300-win pitchers not in the Hall of Fame are the four most recent members to join the club, all of whom have not yet been inactive for five years: Roger Clemens, Greg Maddux, Tom Glavine and Johnson.

Forty-two percent of the 300-win club's 24 members have made the cut since 1982, and this decade has marked the third time in history that four or more men have reached 300 wins. Five did it in the 1980s, and four in the 1890s. Cy Young, who reached 300 in 1901, went on to play another 10 seasons, setting the all-time wins record at 511.

"It sounds funny, but I've played 21, 22 years, I'm 45 and I've come upon 300 wins, and I'm thinking, 'I only have 211 more to catch Cy Young,'" Johnson told MLB.com. Johnson played for the Montreal Expos, Seattle Mariners, Houston Astros, Arizona Diamondbacks and New York Yankees before joining the Giants this season. He has a career .647 winning percentage, a 3.28 ERA and 4,845 strikeouts -- second on the all-time list.

In his only World Series appearance, he went 3-0 with a 1.04 ERA as the 2001 Series co-Most Valuable Player for the D-backs. The 10-time All-Star has won five Cy Young Awards as well as the 2002 pitching Triple Crown.