LeBron James was in silence after the Denver game as he refused to talk after the game and broke his silence via his Twitter account.
''For the second game in a row, our defense let us down,'' Los Angeles Lakers coach Frank Vogel said after the loss.
Monk scored 21 points in the first half while hitting eight of his first nine shots in his latest impressive performance for the Lakers.
The Lakers (19-19) climbed back to .500, with their 30-something veterans carrying them in the fourth quarter.
This was the first 40-point game of the season for LeBron and made him the oldest player to put up 40 points and 10 rebounds.
LeBron had 32 points, 11 rebounds and 11 assists for his third triple-double this season, and it was his fifth consecutive 30-point game.
The record is a testament to the longevity of James, who played in his first Christmas game as a rookie in 2003.
Harden and the Brooklyn Nets returned from a week-long COVID-19 hiatus to beat Los Angeles 122-115 Saturday night.
Deandre Ayton had 19 points and 11 rebounds, and Booker scored 24 as the Suns won their fourth consecutive game.
LeBron James had 31 points, Carmelo Anthony added 21 and Russell Westbrook 20 as Los Angeles Lakers dropped its second straight game.