<P> The following is a listing of all 30 current Major League Baseball ( MLB ) teams ranked by win -- loss record percentage , accurate as of the end of the 2016 Major League Baseball season . The records do not count wins and losses recorded by a team 's playing time in the National Association of Professional Base Ball Players ( NAPBP ) . Counting MLB statistics , the New York Yankees have the highest win -- loss record percentage , with . 569 . The Tampa Bay Rays have the lowest win -- loss record percentage , with . 462 . The San Francisco Giants and Tampa Bay Rays have recorded the most and least overall wins , with 10,951 and 1,420 , respectively . The Chicago Cubs lead the association with the most played games , with 21,060 . Conversely , the Rays have played the least overall games , with 3,076 . </P>
<P> The following is a listing of all 30 current Major League Baseball ( MLB ) teams ranked by win -- loss record percentage , accurate as of the end of the 2016 Major League Baseball season . The records do not count wins and losses recorded by a team 's playing time in the National Association of Professional Base Ball Players ( NAPBP ) . Counting MLB statistics , the New York Yankees have the highest win -- loss record percentage , with . 569 . The Tampa Bay Rays have the lowest win -- loss record percentage , with . 462 . The San Francisco Giants and Tampa Bay Rays have recorded the most and least overall wins , with 10,951 and 1,420 , respectively . The Chicago Cubs lead the association with the most played games , with 21,060 . Conversely , the Rays have played the least overall games , with 3,076 . </P>
what mlb team has lost the most games
what mlb team has lost the most games
The Tampa Bay Rays
The Tampa Bay Rays