Bases on balls per nine innings pitched

In baseball statistics, bases on balls per nine innings pitched (BB/9IP or BB/9) or walks per nine innings (denoted by W/9) is the average number of bases on balls, (or walks) given up by a pitcher per nine innings pitched. It is determined by multiplying the number of bases on balls allowed by nine, and dividing by the number of innings pitched.[1] It is a measure of the bases on balls ability of a pitcher.


Candy Cummings 1872
Candy Cummings, all-time career leader in BB/9IP

All but one of the top 25 single-season leaders in BB/9IP through 2018 pitched in the period of 1876-84. George Zettlein was the all-time single-season leader (0.2308 in 1876), followed by Cherokee Fisher (0.2355 in 1876) and George Bradley (0.2755 in 1880).[2] The highest single-season modern day baseball performance was by Carlos Silva (0.4301 in 2005).[2]

The all-time career leaders in BB/9IP through 2018 were Candy Cummings (0.4731), Tommy Bond (0.4787), and Al Spalding (0.5114), all of whom played in the 1870s and 1880s.[3]

The active career leaders in BB/9IP through 2018 were Corey Kluber (1.9089), Jordan Zimmermann (1.9139), and Chris Sale (2.0461).[4]


  1. ^ Strikeout and Walk Rates | Sabermetrics Library
  2. ^ a b Single-Season Leaders &amp Records for Bases On Balls per 9 IP |
  3. ^ Career Leaders &amp Records for Bases On Balls per 9 IP |
  4. ^ Active Leaders &amp Records for Bases On Balls per 9 IP |
Brian Moran (baseball)

Brian William Moran (born September 30, 1988) is an American professional baseball player in the Miami Marlins organization. Moran, a pitcher, played baseball at the University of North Carolina before turning professional. Moran was drafted from North Carolina by the Seattle Mariners in the 2009 Major League Baseball draft. He made his professional debut that season with the rookie-level Pulaski Mariners. Since then, he has played in the minor leagues with the Clinton LumberKings (2009–2010), the High Desert Mavericks (2010), and the West Tenn Diamond Jaxx (2010). In 2010, he was selected to play in the Midwest League All-Star Game as a member of the LumberKings. Moran bats and throws left-handed. He stands at 6 feet 3 inches (1.91 m) and weighs 185 pounds (84 kg).

Burt Hooton

Burt Carlton Hooton (born February 7, 1950), nicknamed "Happy", is an American former right-handed starting pitcher and former coach in Major League Baseball. He won 151 games over a 15-year career, mostly with the Chicago Cubs and Los Angeles Dodgers.

Hooton's career began auspiciously with a no-hitter in his fourth major league game for the Cubs, but he gained perhaps his widest recognition for his several playoff performances with the Dodgers. His only All-Star appearance was in 1981, when he also was named the NLCS Most Valuable Player on the way to helping the Dodgers to a World Series championship with four postseason wins in five appearances.

He is currently the pitching coach of the Fort Wayne TinCaps, the Class-A affiliate of the San Diego Padres.

Christy Mathewson

Christopher Mathewson (August 12, 1880 – October 7, 1925), nicknamed "Big Six", "The Christian Gentleman", "Matty", and "The Gentleman's Hurler", was a Major League Baseball (MLB) right-handed pitcher who played 17 seasons with the New York Giants. He stood 6 feet 1 inch (1.85 m) tall and weighed 195 pounds (88 kg). He was among the most dominant pitchers in baseball history, and ranks in the all-time top ten in several key pitching categories, including wins, shutouts, and ERA. In fact, he is the only professional pitcher in history to rank in the top ten both in career wins and in career ERA, if taking 19th century pitchers statistics into account. Otherwise, both Mathewson and Walter Johnson would hold that distinction. In 1936 Mathewson was elected into the Baseball Hall of Fame as one of its first five members.

Mathewson grew up in Factoryville, Pennsylvania, and began playing semiprofessional baseball when he was 14 years old. He played in the minor leagues in 1899, recording a record of 21 wins and two losses. He pitched for the New York Giants the next season but was sent back to the minors. He would eventually return to the Giants and go on to win 373 games in his career, a National League record. He led the Giants to victory in the 1905 World Series by pitching three shutouts. Mathewson never pitched on Sundays, owing to his Christian beliefs. Mathewson served in the United States Army's Chemical Warfare Service in World War I, and was accidentally exposed to chemical weapons during training. His respiratory system was weakened from the exposure, causing him to contract tuberculosis, from which he died in Saranac Lake, New York in 1925.

Mark Fidrych

Mark Steven Fidrych (; August 14, 1954 – April 13, 2009), nicknamed "The Bird", was a Major League Baseball pitcher. He pitched his entire career for the Detroit Tigers (1976–1980).

In 1976, Fidrych led the major leagues with a 2.34 ERA, won the AL Rookie of the Year award, and finished with a 19–9 record. Shortly after, injuries piled up and his major league career ended after just five seasons.

Base running


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