Run ( baseball ) - wikipedia Run ( baseball ) `` Runs scored '' redirects here. For the cricket topic, see Scoring runs in cricket. This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. ( July 2013 ) Bengie Molina of the Anaheim Angels ( in gray and red ) scores a run by touching home plate after rounding all the bases. In baseball, a run is scored when a player advances around first, second and third base and returns safely to home plate, touching the bases in that order, before three outs are recorded and all obligations to reach base safely on batted balls are met or assured. A player may score by hitting a home run or by any combination of plays that puts him safely `` on base '' ( that is, on first, second, or third ) as a runner and subsequently brings him home. The object of the game is for a team to score more runs than its opponent. The Official Baseball Rules hold that if the third out of an inning is a force out of a runner advancing to any base then, even if another baserunner crosses home plate before that force out is made, his run does not count. However, if the third out is not a force out, but a tag out, then if that other baserunner crosses home plate before that tag out is made, his run will count. In baseball statistics, a player who advances around all the bases to score is credited with a run ( R ), sometimes referred to as a `` run scored ''. While runs scored is considered an important individual batting statistic, it is regarded as less significant than runs batted in ( RBIs ). Both individual runs scored and runs batted in are heavily context - dependent ; for a more sophisticated assessment of a player 's contribution toward producing runs for his team ( see runs created ). A pitcher is likewise assessed runs surrendered in his statistics, which differentiate between standard earned runs ( for which the pitcher is statistically assigned full responsibility ) and unearned runs scored due to fielding errors, which do not count in his personal statistics. Specifically, if a fielding error occurs which affects the number of runs scored in an inning, the Official Scorer -- the official in - game statistician -- in order to determine how many of the runs should be classified as earned, will reconstruct the inning as if the error had not occurred. For example, with two outs, suppose a runner reaches base because of a fielding error, and then the next batter hits a two - run home run, and then the following batter then makes the third out, ending the inning. If the inning is reconstructed without the error, and if that third batter, instead of reaching on an error, registered an out, the inning would have ended there without any runs scoring. Thus, the two runs that did score will be classified as unearned, and will not count in the pitcher 's personal statistics. If a pitching substitution occurs while a runner is on base, and that runner eventually scores a run, the pitcher who allowed the player to get on base is charged with the run even though he was no longer pitching when the run scored. Contents 1 Examples 2 Significant run scoring records 2.1 Player 2.2 Team 2.3 World Series 3 See also 4 References 5 External links Examples Below are some examples of runs scored. With a runner on third and two outs, batter hits a ground ball to the second baseman. The runner on third races home. The second baseman fields the ball and throws on to the first baseman in time to get the batter on the force out at first for the third out of the inning. Even if the runner on third had touched home plate before that force out was made at first, his run would not count. With a runner on third and two outs, batter hits a fly ball over centerfielder 's head. It bounces several times as it rolls to the wall. The runner on third runs safely home and easily scores a run. Meanwhile, the batter safely reaches first, then tries to advance to second. The centerfielder, having retrieved the ball, throws the ball to the second baseman and the runner is tagged out as he slides into second. Since the runner stepped on home plate before the batter was tagged out at second for the third out of the inning, his run will count. Significant run scoring Records Player The career record for most runs scored by a major - league player is 2,295, held by Rickey Henderson ( 1979 -- 2003 ). The season record for most runs scored is 198, set by Billy Hamilton of the Philadelphia Phillies in 1894. The so - called modern - day record ( 1900 and after ) is 177, achieved by Babe Ruth of the New York Yankees in 1921. The record for most seasons leading one of the major leagues in runs scored is 8, held by Babe Ruth ( American League : 1919 -- 21, 1923, 1924, 1926 -- 28 ). The record for most consecutive games with at least one run scored is 18, shared by the Yankees ' Red Rolfe ( August 9 -- August 25, 1939 ) and the Cleveland Indians ' Kenny Lofton ( August 15 -- September 3, 2000 ). The record for most runs scored by a player in a single game is 7, set by Guy Hecker of the American Association 's Louisville Colonels on August 15, 1886. The modern - day record of 6 is shared by fourteen players ( eight of whom attained it before 1900 ). Of the six modern - day players to score 6 runs in a game, the first to perform the feat was Mel Ott of the New York Giants on August 4, 1934 ( he repeated the accomplishment ten years later, making him the only player ever to do it twice ) ; the most recent was Shawn Green, then of the Los Angeles Dodgers, on May 23, 2002. Team The record for most runs scored by a major - league team during a single season is 1,212, set by the Boston Beaneaters ( now the Atlanta Braves ) in 1894. The modern - day record is 1,067, achieved by the New York Yankees in 1931. The team record for most consecutive games with at least one run scored ( i.e., most consecutive games not being shut out ) is 308, set by the Yankees between August 3, 1931, and August 2, 1933. The team record for most runs in its overall history ( up until 2013 ) is the Chicago Cubs with 94,138. The record for most runs scored by a team in a single game is 36, set by the Chicago Colts ( now the Chicago Cubs ) against the Louisville Colonels ( which joined the National League in 1892 ) on June 29, 1897. The modern - day record of 30 was set on August 22, 2007, by the Texas Rangers against the Baltimore Orioles in the first game of a doubleheader at Oriole Park. The Rangers scored 5 runs in the fourth inning, 9 in the sixth, 10 in the eighth, and 6 in the ninth. On August 25, 1922, the highest - scoring game in major - league history took place : the Chicago Cubs defeated the Philadelphia Phillies 26 -- 23, a total of 49 runs. The record for most runs scored by a team in a single inning is 18, set by the Chicago White Stockings ( now the Cubs ) against the Detroit Wolverines on September 6, 1883. The modern - day record is 17, achieved by the Boston Red Sox against the Detroit Tigers on June 18, 1953. World Series The Yankees ' Mickey Mantle holds the record for most career World Series runs scored with 42 ( 1951 -- 53, 1955 -- 58, 1960 -- 64 ). The record for most runs scored in a single World Series, shared by two players, is 10, achieved both times in a six - game Series : Reggie Jackson of the Yankees was the first to do it, in 1977 ; the Toronto Blue Jays ' Paul Molitor equaled him in 1993. The most runs ever scored by a player in a World Series game is 4, a record shared by ten players. Babe Ruth set the mark on October 6, 1926, while with the Yankees ; it was matched most recently by Albert Pujols of the St. Louis Cardinals in Game 3 of the 2011 World Series. On October 2, 1936, playing the New York Giants, the Yankees set the team record for most runs scored in a single Series game with 18. Players crossed the plate a record 29 times in the highest - scoring World Series game in history on October 20, 1993, as the Blue Jays beat the Phillies 15 -- 14 at Veterans Stadium in Game 4 of the 1993 World Series. See also List of Major League Baseball career runs scored leaders Run differential References ^ Jump up to : Baseball Explained, by Phillip Mahony. McFarland Books, 2014. See www.baseballexplained.com Jump up ^ `` MLB Teams and Baseball Encyclopedia -- Baseball-Reference.com ''. Baseball-Reference.com. Retrieved 11 October 2015. External links Yearly League Leaders & Records for Runs Scored. Baseball-Reference.com. Retrieved 2009 - 10 - 08. Baseball statistics Batting Batting average On - base percentage Slugging percentage Hit Single Double Triple Home run Extra-base hit Grand slam RBI Game - winning RBI Walk Bunt Sacrifice bunt Sacrifice fly On - base plus slugging Base running Run Stolen base Stolen base percentage Caught stealing Pitching Win -- loss record Innings pitched Pitchers of record Save Hold Run Earned ERA Strikeout Walk Perfect game No - hitter WHIP BB / 9 K / 9 Quality start Complete game Shutout Wild pitch Fielding Fielding percentage Assist Putout Error Fielder 's choice Defensive indifference Passed ball Sabermetrics Adjusted ERA+ Base runs Batting park factor Catcher 's ERA Defensive Runs Saved Extrapolated Runs Game score Isolated Power Range factor Runs created Secondary average NERD Out of zone plays made Ultimate zone rating Weighted on - base average Wins Above Replacement Win probability added Win Shares Baseball concepts Outline, Glossary Rules Rules of baseball Ground rules Infield fly rule Interference Field Backstop Baseball diamond Batter 's box Batter 's eye Bullpen Dugout Foul pole Foul territory Infield On - deck circle Outfield Warning track Equipment Ball Bat Batting cage Batting glove Batting helmet Cap Doughnut Glove ( defense ) Pitching machine Protective cup Shin guard Stirrups Uniform Uniform number Game process Batting order Extra innings Innings On - deck Out Positions Run Seventh - inning stretch Batting At bat Baltimore chop Bat flip Chinese home run Batting count Bunt Checked swing Cleanup hitter Designated hitter Double Double switch Foul ball Foul tip Golden sombrero Grand slam Ground rule double Hat trick Hit Hit and run Hit by pitch Hitting for the cycle Home run Infield hit Inside - the - park home run Leadoff hitter Lefty - righty switch Line drive Moonshot Plate appearance Platoon system Pull hitter Sacrifice bunt Sacrifice fly Single Slap bunt Strikeout Strike zone Sweet spot Switch hitter Triple Walk Walk - off home run Pitching Balk Beanball Breaking ball Brushback pitch Changeup Curveball Eephus Fastball Full count Inside pitching Intentional walk Knuckleball No - hitter Passed ball Perfect game Pitch count Pitchout Quick pitch Screwball Shutout Slider Spitball Strikeout Striking out the side Time of pitch Wild pitch Base running Balk Bases loaded Caught stealing Contact play Hit and run Left on base Obstruction Safe Scoring position Slide Small ball Squeeze play Stolen base Tag up Fielding ( positioning ) Appeal play Assist Blocking the plate Catch Defensive indifference Double play Error Fielder 's choice Fifth infielder Force play Fourth out Hidden ball trick In - between hop Infield fly rule Infield shift Interference Pickoff Putout Rundown Tag out Triple play unassisted Uncaught third strike Wall climb Wheel play Miscellaneous Baseball statistics Bench jockey Bench - clearing brawl Dead ball Jargon In flight Pepper Scorekeeping Series Shagging Slump Streak ( losing ) Streak ( winning ) Portal WikiProject Retrieved from `` https://en.wikipedia.org/w/index.php?title=Run_(baseball)&oldid=803838909 '' Categories : Baseball rules Baserunning statistics Baseball terminology Scoring ( sport ) Hidden categories : Articles needing additional references from July 2013 All articles needing additional references Talk Contents About Wikipedia Deutsch Español Français 한국어 मराठी Nederlands 日本 語 Polski Português Simple English 中文 Edit links This page was last edited on 4 October 2017, at 23 : 41. About Wikipedia

Question: how many runs can you score in one inning
Answer: 18