JockBio Vital Stats
  • Chicago White Sox • Pitcher • #56
  • Height: 6' 2"
• Weight: 230 • Born: 3/23/79
  • During the 1999 Junior College playoffs, Mark faced Albert Pujols of Maple Woods College. Pujols drove a two-run homer the other way, but Jefferson won the game.
  • Mark was issued number 56 when he was a non-roster invitee to spring training in 2000. He decided to keep the number. He had worn 39 in high school and college, because it was Todd Worrell's number.
  • Mark was named Southern League Pitcher of the Year in 2000.
  • Mark would have been the hands-down pick for Rookie of the Year in 2001, but he had pitched one too many innings for Chicago the year before.
  • Mark would have won 20 games in 2002, but a two-out error in his final start cost him the decision.
  • Mark learned how good Hideki Matsui was before any other pitcher in the A.L. During a postseason tour of Japan in 2002, Matsui lined a ball off his pitching shoulder.
  • In a 2004 game against the Cleveland Indians, Mark pitched a two-hitter with two double plays, facing the minimum 27 batters.
  • In 2004, Mark became the first White Sox pitcher to lead the league in innings pitched since Wilbur Wood in 1973.
  • Mark's streak of 49 straight six-inning starts, which ended in 2005, was the longest since Steve Carlton's 69 from 1979 to 1982.
  • In 2005, Mark accused the Texas Rangers of stealing his signs and flashing his pitches on the scoreboard.
  • In 2006, Mark became the first pitcher in team history to make 30-plus starts in six straight seasons.
  • Mark led the A.L. with 10 pickoffs in 2006. Opponents stole just four bases in 11 attempts against him.
  • Mark’s 2007 no-hitter was the first one for a White Sox pitcher at home since Joel Horlen did the same 40 years earlier.
  • In 2009, Mark became just the sixth pitcher to throw a no-hitter and also a perfect game. The other five are Randy Johnson, Sandy Koufax, Jim Bunning, Addie Joss and Cy Young—all in (or on their way to) the Hall of Fame.
  • Mark retired the first 17 batters he faced in the start following his perfect game. Including one batter before the perfect game, Mark set a new record of 45 straight hitters retired. Teammate Bobby Jenks and Jim Barr had previously shared the record.
  • In 2009, Mark slugged his first homer. It came off Braden Looper of the Milwaukee Brewers.
  • The plate umpire for both of Mark’s no-hitters was Eric Cooper. Like Mark, Cooper also wears number 56.
  • The State of Illinois proclaimed July 30, 2009 Mark Buehrle Day.
  • Mark says if there's one old-timer he could watch in person, it would be Babe Ruth.
  • Mark was an excellent soccer player. He made All-State as a senior in high school.
  • Mark's favorite movie is The Shawshank Redemption.
  • In 2005, Mark became engaged to Jamie Streck. An avid hunter, he proposed to her in a tree stand. The two had gone to the same high school, but Mark says that he was small and always getting stuffed into lockers, so she probably didn't notice him.
  • When asked what she was doing during the 9th inning of her husband’s perfect game, Jamie answered, “Trying not to throw up.”
  • Mark's high school coach claims he was cut as a freshman and sophomore by new assistant coaches.
  • Mark's nickname is “Chinstrap.”



Hideki Matsui,
2003 New York Post


Steve Carlton, 1979 Hostess


Wilbur Wood, 1968 Topps


Addie Joss, 1973 TCMA

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