Mark McGwire had over 70 home runs in one season
The 1997 Seattle Mariners hold the MLB single season record for home runs with 264.
The 1906 Chicago Cubs and the 2001 Seattle Mariners hold the MLB record for wins in the regular season with 116.
counting post season play the Yankees hold that record with 125 wins in 1998Yankees 106
Career and Single Season RBI LeadersHank Wilson of the Chicago Cubs holds the major League record for RBIs in a single season with 191 hit in 1930. New York Yankees, Lou Gehrig holds the American League record for RBIs in a single season with 184 in 1931. Hank Aaron holds the Major League record for career RBIs with 2,297 and the National League record with 2,202. Babe Ruth is second in career RBIs with 2,218, and hold the American League career RBI record with 2,201.
The 1906 Chicago Cubs hold the National League record for wins during a regular season with 116. This is also the MLB record, shared with the 2001 Seattle Mariners.
The Seattle Mariners and the Chicago Cubs each hold the record for the most team wins in a season with 116 wins each.
Nolan Ryan with 383 (modern record - in the 1800s teams only had one pitcher and some of those guys had 500+ strikeouts per season)
The 1899 Cleveland Spiders of the National League hold the Major League Baseball (MLB) record for worst regular season record (of all eras) with a record of 20-134, giving them a winning percentage of .130. In 1899, the Cleveland Spiders also set major league records for most consecutive losses in a season (24, from July 26 to September 16), most losses in a month (27 in July), and had 6 double-digit losing streaks. They lost 40 of their last 41 games.
Joe DiMaggio hit in 56 consecutive games during the 1941 season.
ryne sandberg. creer .989. major league record Ryne Sandberg does hold the Major League record, but with a .990 fielding percentage
In the 2011 season, that is Todd Helton of the Colorado Rockies and Derek Jeter of the New York Yankees.
The Baltimore Orioles hold the American League record for most consecutive losses. The ballclub lost its first 21 games of the 1988 season. The 1961 Philadelphia Phillies set the modern major league record with 23 straight losses.