On August 12, 1988 — The Red Sox beat the Tigers 9-4 for their 23rd consecutive win at Fenway Park, establishing a new major league record [the streak will end after one more home victory]. The 1931 Philadelphia Athletics had previously set the league mark with 22 straight home victories.
Source:
Baseball Reference August 12
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game