The record is 116 wins.
1906 Chicago Cubs: 116-36, winning percentage of .763
2001 Seattle Mariners: 116-46, winning percentage of .716
Can this Red Sox team break either the wins record, the winning percentage record, or both? A .765 winning percentage for a 162 game schedule is 124 games. Our beloved Sox are 14-2 with 146 to go, so they'd have to go 110-36 the rest of the way to break the winning percentage record, and to break the wins record and end up with 117, they'd have to go 103-43.