List of major League Baseball single - season records - wikipedia List of major League Baseball single - season records Records are for post-1900 only and need to be verified by a reference source, preferably the Elias Book of Baseball Records. Contents 1 Batting records 1.1 Home runs 1.2 Hits 1.3 Batting average 1.4 Runs batted in 1.5 Hitting streak 1.6 Runs scored 1.7 Doubles 1.8 Triples 1.9 At bats 1.10 Stolen bases 2 Pitching records 2.1 Wins 2.1. 1 All - time 2.1. 2 Live - ball era ( post-1920 ) 2.2 Earned run average 2.3 Strikeouts 2.4 Shutouts 2.5 Saves 2.6 Balks 2.7 Wild pitches 3 Team records 3.1 Hits 3.2 Home runs 3.3 Runs batted in 3.4 Runs scored 4 References 5 External links Batting records Home runs Player Team Home runs Season Barry Bonds San Francisco Giants 73 2001 Mark McGwire St. Louis Cardinals 70 1998 Sammy Sosa Chicago Cubs 66 1998 Mark McGwire St. Louis Cardinals 65 1999 Sammy Sosa Chicago Cubs 64 2001 Sammy Sosa Chicago Cubs 63 1999 Roger Maris New York Yankees 61 1961 Babe Ruth New York Yankees 60 1927 Hits Player Team Hits Season Ichiro Suzuki Seattle Mariners 262 George Sisler St. Louis Browns 257 1920 Bill Terry New York Giants 254 1930 Lefty O'Doul Philadelphia Phillies 254 1929 Batting average Player Team Average Season Nap Lajoie Philadelphia Athletics. 426 1901 Rogers Hornsby St. Louis Cardinals. 424 1924 George Sisler St. Louis Browns. 420 1922 Ty Cobb Detroit Tigers. 420 1911 Runs batted in Hank Greenberg, Hall of Famer and 2 - time MVP Player Team RBIs Season Hack Wilson Chicago Cubs 191 1930 Lou Gehrig New York Yankees 184 1931 Hank Greenberg Detroit Tigers 183 1937 Jimmie Foxx Boston Red Sox 175 1938 Lou Gehrig New York Yankees 175 1927 Hitting streak Player Team Streak Season Joe DiMaggio New York Yankees 56 1941 Pete Rose Cincinnati Reds 44 1978 Bill Dahlen Chicago Colts 42 1894 George Sisler St. Louis Browns 41 1922 Ty Cobb Detroit Tigers 40 1911 Runs scored Player Team Runs Season Babe Ruth New York Yankees 179 1921 Lou Gehrig New York Yankees 167 1936 Lou Gehrig New York Yankees 163 1931 Babe Ruth New York Yankees 163 1928 Chuck Klein Philadelphia Phillies 158 1930 Doubles Player Team Doubles Season Earl Webb Boston Red Sox 67 1931 George Burns Cleveland Indians 64 1926 Joe Medwick St. Louis Cardinals 64 1936 Hank Greenberg Detroit Tigers 63 1934 Paul Waner Pittsburgh Pirates 62 1932 Triples Player Team Triples Season Chief Wilson Pittsburgh Pirates 36 1912 Sam Crawford Detroit Tigers 26 1914 Kiki Cuyler Pittsburgh Pirates 26 1925 Joe Jackson Cleveland Naps 26 1912 At bats Player Team At bats Season Jimmy Rollins Philadelphia Phillies 716 2007 Willie Wilson Kansas City Royals 705 1980 Ichiro Suzuki Seattle Mariners 704 Juan Samuel Philadelphia Phillies 701 1984 Dave Cash Philadelphia Phillies 699 Juan Pierre Chicago Cubs 699 2006 Stolen bases Player Team Stolen bases Season Rickey Henderson Oakland Athletics 130 1982 Lou Brock St. Louis Cardinals 118 Vince Coleman St. Louis Cardinals 110 1985 Vince Coleman St. Louis Cardinals 109 Rickey Henderson Oakland Athletics 108 Pitching records Wins All - time Player Team Wins Season Jack Chesbro New York Yankees 41 1904 Ed Walsh Chicago White Sox 40 1908 Christy Mathewson New York Giants 37 1908 Walter Johnson Washington Senators 36 1913 Joe McGinnity New York Giants 35 1904 Live - ball era ( post-1920 ) Player Team Wins Season Lefty Grove Philadelphia Athletics 31 1931 Denny McLain Detroit Tigers 31 1968 Dizzy Dean St. Louis Cardinals 30 1934 Hal Newhouser Detroit Tigers 29 1944 Dazzy Vance Brooklyn Dodgers 28 1924 Lefty Grove Philadelphia Athletics 28 1930 Dizzy Dean St. Louis Cardinals 28 1935 Robin Roberts Philadelphia Phillies 28 1952 Earned run average Player Team ERA Season Dutch Leonard Boston Red Sox 0.96 1914 Mordecai Brown Chicago Cubs 1.04 1906 Bob Gibson St. Louis Cardinals 1.12 1968 Strikeouts Player Team Strikeouts Season Nolan Ryan California Angels 383 1973 Sandy Koufax Los Angeles Dodgers 382 1965 Randy Johnson Arizona Diamondbacks 372 2001 Nolan Ryan Los Angeles Angels 367 Randy Johnson Arizona Diamondbacks 364 1999 Shutouts Player Team Shutouts Season Jack Coombs Philadelphia Athletics 13 1910 Bob Gibson St. Louis Cardinals 13 1968 Pete Alexander Philadelphia Phillies 12 1915 Saves Player Team Saves Season Francisco Rodríguez Los Angeles Angels 62 2008 Bobby Thigpen Chicago White Sox 57 John Smoltz Atlanta Braves 55 2002 Éric Gagné Los Angeles Dodgers 55 2003 Balks Player Team Balks Season Dave Stewart Oakland Athletics 16 1988 John Dopson Boston Red Sox 15 Bob Welch Oakland Athletics 13 1988 John Candelaria New York Yankees 12 1988 Juan Guzmán Texas Rangers 12 1988 Wild pitches Player Team Wild pitches Season Red Ames New York Giants 30 1905 Tony Cloninger Atlanta Braves 27 1966 Larry Cheney Chicago Cubs 26 1914 Juan Guzmán Toronto Blue Jays 26 Team records Hits Team Hits Season Philadelphia Phillies 1,783 1930 Home runs Team Home runs Season Seattle Mariners 264 Texas Rangers 260 2005 Toronto Blue Jays 257 Baltimore Orioles 257 Runs batted in Team Runs Batted In Season New York Yankees 997 1936 Runs scored Team Runs Scored Season New York Yankees 1,067 1931 References External links http://www.mlb.com http://www.baseball-almanac.com http://www.espn.com http://www.baseball-reference.com Major League Baseball records Baseball statistics ( types of records ) General Record holders Single - game records Single - season records Record breakers by season Records considered unbreakable Batting leaders Career Batting average On - base percentage Times on base Slugging percentage OPS Hits 3,000 club Progressive Singles Doubles Triples Home runs 500 club Progressive Extra base hits RBIs Total bases Walks Intentional HBP Strikeouts Games played At - bats Plate appearances Annual Batting average Doubles Triples Home runs RBI Season Batting average Triples Home run Progressive Game Home runs Hitting for the cycle Grand slams RBI Game Inning Hits Misc Consecutive game hitting streak On - base plus slugging Hits Home runs Doubles Triples RBIs Baserunning leaders Career Runs Stolen bases Annual Runs Stolen bases Game Runs Misc Stolen bases Runs Pitching leaders Career Wins 300 club Losses Games started Games finished Innings pitched Strikeouts 3,000 club Saves Complete games Shutouts ERA WHIP Walks Hit batsmen Wild pitches Batters faced Annual Wins Saves Shutouts Strikeouts ERA Game No - hitter Perfect game List of perfect games Strikeouts Game Inning Immaculate innings Misc Wins Fielding leaders Career Putouts 1B 2B SS 3B OF LF CF RF Errors 1B 2B SS 3B OF LF Assists Passed balls Annual Putouts Errors Managing records Wins and winning percentage Multiple stat records Triple Crown 20 -- 20 -- 20 club 30 -- 30 club 40 -- 40 club Other Consecutive games played Longest winning streaks Longest losing streaks Records World record Category : World records Guinness World Records Limca Book of Records Unique World Records Asia Book of Records People Heaviest Oldest Tallest Shortest Sporting records Chess Cricket Test One Day International Twenty20 International Cycling FIBA Basketball World Cup records FIFA World Cup records Formula One motorsport constructors drivers Juggling World Rally Championship Speed skating Figure skating Swimming Athletics : World records progressions Olympic records National records In Australia : List of NRL records List of AFL records In the US : NBA Regular season Post-season NFL individual team NHL individual team MLB MLS Track and field In India : ISL records National records Japan Palestinian territories Philippines Motion records Speed Air Transcontinental Land speed record Railed Production car Motorcycle land - speed record Production motorcycle Wheel - driven British Water speed record Underwater Sailing Sound barrier Speed of light Distance Flight distance record Flight altitude record Ocean depth record Flight endurance record Boundary of space Other Spaceflight records FAI records Man - made objects Tallest structures Category on tallest structures Physical phenomena Solar System Extremes Extremes on Earth Extreme points of Earth List of weather records Organisms List of longest - living organisms Smallest organisms Largest organisms Retrieved from `` https://en.wikipedia.org/w/index.php?title=List_of_Major_League_Baseball_single-season_records&oldid=819914407 '' Categories : Major League Baseball records Hidden categories : Use mdy dates from July 2013 Talk Contents About Wikipedia Português Edit links This page was last edited on 12 January 2018, at 00 : 29. About Wikipedia

Question: mlb record for homeruns in a season by a team
Answer: Seattle Mariners