Maris hit 61 home runs in the 1961 season, setting a new record for a Yankees player, and with 32 games remaining, Judge is now up to 51. It is the second straight day he has hit a home run, and he has five in his past eight games.
His long-ball proved to be the difference between the two teams, with his three-run shot in the fourth inning extending his side's lead from 4-2 to 7-2.
It was the third Yankees home run of the night after Andrew Benintendi connected as the second batter of the game, giving him his second home run since being traded to New York at the deadline.
Judge now has 15 more home runs than second-placed Kyle Schwarber from the Philadelphia Phillies as he makes his case as the AL MVP, while his biggest competitor for the award – the Angels' Shohei Ohtani – finished two-for-four at the plate with a double.
The Yankees are seven games clear of the Toronto Blue Jays for the AL East lead.
Valdez dishes up another quality start
Houston Astros pitcher Framber Valdez produced a terrific start on the mound to help his side to a 4-2 road win against the Texas Rangers, collecting his league-leading 23rd quality start of the season.
From Valdez's 25 starts this season, 23 have been considered quality starts, meaning at least six innings pitched with no more than three earned runs, and he did it in style.
Valdez ended up pitching eight full innings, striking out eight batters while only allowing two runs, while future Hall-of-Fame teammate Jose Altuve provided run support with his 22nd home run of the campaign.
No other starting pitcher has more than 19 quality starts, with five players on that number – including Valdez's Astros teammate Justin Verlander.
Vladdy stars for the Blue Jays
Guerrero batted in the Blue Jays' first run with an RBI single in the fifth inning, and after a three-run homer to Teoscar Hernandez in the sixth, Guerrero added a final insurance score with a solo blast in the seventh frame.
On the mound, Kevin Gausman was strong for Toronto, striking out nine batters in his six innings while giving up two runs.