<P> 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 . </P>
<P> 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 . </P>
most runs by a team in a game
most runs by a team in a game
36
36