https://www.baseball-reference.com/bullpen/Baseball_statistics

BABIP - Batting average on balls in play - batting average against a pitcher on batted balls ending a plate appearance, ...

https://en.wikipedia.org/wiki/Baseball_statistics

BB – Base on balls (also called a "walk"): times pitching four balls, ... Quality of pitch: comprehensive pitch evaluation statistic ...

http://m.mlb.com/glossary/standard-stats

True, standard stats are rarely the central focus of Major League Baseball's ... in lieu of batting average for hitters, and quality starts instead of wins for pitchers.

https://www.espn.com/mlb/stats/pitching/_/order/false

http://mlb.mlb.com/stats/sortable.jsp

MLB's official statistic page detailing player stats with milestone tracker and statcast leaderboard, the latest in MLB technology.

http://www.espn.com/mlb/statistics

Discover the 2019 MLB player and team statistics leaders.

http://hosted.stats.com/mlb/stats.asp?file=glossary

Abbreviations | Baseball Terms | Formulas and Definitions | Breakdown Categories ... Inherited Scored, A Relief Pitching statistic indicating the percentage of ...

http://www.fangraphs.com/library/pitching/complete-list-pitching/

BABIP (Batting Average on Balls in Play): The rate at which the pitcher allows a hit when the .... These statistics are based on data from Baseball Info Solutions.

https://www.wikihow.com/Read-Baseball-Statistics

Browse pitching statistics. Pitchers are listed in the order they appeared in the game. If a pitcher earned a ...

https://www.baseballprospectus.com/sortable

Batter's Quality of Pitchers Faced ... Pitching. 3. Individual Stats - Season Totals · 4. Individual Stats - by Team · CSPROB&CSAA ... Pitcher's Quality of Opponents  ...