OnlyBoth : References

References

1.	We note that some teams have changed their names over the years. So, when referring to a specific season, we use the team name that was current during that season. Hence, you might see a reference to the 77 Boston Bees teams when making a reference to 1936, even though the team had other names before and later, finally becoming the Boston Braves until moving to Milwaukee. Team data come from the archive at seanlahman.com. This database is copyright 1996-2014 by Sean Lahman. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/
2.	Batting, pitching, fielding, personal, team, and awards data come from the archive at seanlahman.com. This database is copyright 1996-2014 by Sean Lahman. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/
3.	All-stars data come from the archive at seanlahman.com. A team/season is credited with having had an All-Star player if the All-Star played at any point with the team during that season. This database is copyright 1996-2014 by Sean Lahman. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/
4.	Salary data mostly dates from 1985 and later years. The data come from the archive at seanlahman.com. This database is copyright 1996-2014 by Sean Lahman. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/
5.	Note that West Germany and Germany are combined into the same country. The data come from the archive at seanlahman.com. This database is copyright 1996-2014 by Sean Lahman. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/
6.	Note that West Germany and Germany are combined into the same country and Puerto Rico is considered part of Latin America. The data come from the archive at seanlahman.com. This database is copyright 1996-2014 by Sean Lahman. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/
7.	Player heights and weights have a single value for their entire career. The data come from the archive at seanlahman.com. This database is copyright 1996-2014 by Sean Lahman. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/
8.	Infielders include shortstops and first, second, and third basemen. The data come from the archive at seanlahman.com. This database is copyright 1996-2014 by Sean Lahman. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/
9.	For purposes here, a player needs a minimum of 200 at-bats to get a strikeout rate, batting average, on-base percentage, slugging percentage, on-base plus slugging, and to be considered a 300 hitter. The raw data come from the archive at seanlahman.com. This database is copyright 1996-2014 by Sean Lahman. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/
10.	A player's age is calculated by subtracting his birth year from the season year. The raw data come from the archive at seanlahman.com. This database is copyright 1996-2014 by Sean Lahman. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/
11.	A base stealer needs at least 10 attempts to count his base-stealing percentage. The raw data come from the archive at seanlahman.com. This database is copyright 1996-2014 by Sean Lahman. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/
12.	Postwar refers to all seasons starting in 1946.
13.	Prewar refers to all seasons up to and including 1941.
14.	For batters, we calculate an achievement score based on a complex formula that takes into account batting, base running, and fielding statistics, plus personal awards (MVP, Triple Crown, Gold Glove, and All-Star). For pitchers, their achievement score is based on a different formula that takes into account their wins, losses, saves, personal awards (similar as for batters, plus the Cy Young and Rolaids Relief Man awards), and earned run average. Team achievement scores are based on the number of wins that season with bonuses for post-season achievements: 10, 20, 30, and 40 for winning a wildcard, division, pennant, and World Series respectively. A player or team's best year is defined as the season with his highest achievement score. The raw data come from the archive at seanlahman.com. This database is copyright 1996-2014 by Sean Lahman. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/ Player's Achievement Score Formula
15.	A pitcher's winning percentage is only counted if the number of decisions (wins plus losses) is at least 10. The raw data come from the archive at seanlahman.com. This database is copyright 1996-2014 by Sean Lahman. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/
16.	A pitcher's ERA (earned run average) is only counted if he pitched at least 50 innings during the season for the specified team. The raw data come from the archive at seanlahman.com. This database is copyright 1996-2014 by Sean Lahman. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/
17.	Strikeouts, walks, hits and homers per nine innings, and innings per game, are counted only if at least 50 innings were pitched during the season for the specified team. The raw data come from the archive at seanlahman.com. This database is copyright 1996-2014 by Sean Lahman. This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. For details see: http://creativecommons.org/licenses/by-sa/3.0/
18.	The modern era starts with the 1900 season.
19.	The average height of the batter lineup is calculated after first weighting each batter's height by his number of at-bats.
20.	The average height of the pitching squad is calculated after first weighting each pitcher's height by his number of innings pitched.