LOS ANGELES -- Sammy Sosa of the Chicago Cubs hit his major league-leading 54th homer Sunday night, sending a 2-0 pitch from Darren Dreifort into the right-field bullpen leading off the seventh inning.
The solo homer, only the third hit allowed by Dreifort, broke a scoreless tie and triggered a four-run outburst.
Los Angeles right fielder Raul Mondesi barely moved as the ball soared over his head and traveled an estimated 427 feet.
Sosa's 54th homer came in the Cubs' 129th game and kept him well ahead of last year's pace. Sosa hit his 54th homer in Chicago's 137th game in 1998 and finished with 66 -- four short of Mark McGwire's record.
McGwire entered Sunday night's game against Atlanta with 51 homers -- second in the majors.
The Dodger Stadium crowd cheered Sosa before every at-bat, and cheered the loudest after his home run. Sosa, 6-of-12 with one homer and five RBI against Dreifort, singled and walked in his first two plate appearances.