Who holds the MLB single-season home run record?

Barry Bonds of the San Francisco Giants holds the Major League Baseball single-season home run record, hitting 73 home runs in 2001. That total is recorded by the Elias Sports Bureau, the official statistician for Major League Baseball, and is the accepted single-season mark in MLB record books.

Record and evidence Contemporary and retrospective reporting confirms the 73-home-run season as the standing record. Mark Feinsand of MLB.com has summarized the statistical history of single-season totals, and Ken Rosenthal of The Athletic has written extensively about the season and its legacy, both pointing to Elias Sports Bureau figures that list Barry Bonds as the 2001 leader with 73 home runs. Those sources place Bonds above previous milestones set by Roger Maris with 61 in 1961 and by Sammy Sosa and Mark McGwire during the late 1990s surge in home runs.

Consequences and cultural impact The 73-home-run record has had lasting consequences beyond the numbers. It intensified debates over the legitimacy of records set during the so-called Steroid Era, influenced Hall of Fame voting behavior for players linked to performance-enhancing drugs, and prompted Major League Baseball to strengthen testing and penalties for banned substances. On a human level, the record remains a source of pride for many fans in the San Francisco Bay Area who celebrated Bonds’ dominance, while for others—across different regions and baseball communities—it symbolizes a period of the sport that requires contextualization rather than unqualified celebration.

Territorial and environmental nuances affect how the record is perceived. Local fandom, regional media coverage, and ballpark characteristics shaped immediate reactions in Northern California, while national and international audiences engaged with broader ethical and historical questions. Institutional verification by the Elias Sports Bureau and coverage by established journalists such as Mark Feinsand of MLB.com and Ken Rosenthal of The Athletic ensure that the statistical fact of 73 home runs is clear, even as interpretation of that fact continues to evolve in cultural and historical discussions.