Monday was a bad day for LeBron James since not only did the Los Angeles Lakers lose to the Boston Celtics, but Bronny James' Sierra Canyon also suffered a defeat.

James was in attendance in Sierra Canyon's duel with Paul VI Catholic High School on Monday. The younger James played 13 minutes and was held scoreless as they suffered a 70-62 loss.

Moreover, in the second half of the said contest, a spectator from the stands threw something at Bronny as he was about to inbound the ball. The fan was subsequently thrown out of the game.

The Lakers star saw the incident and simply shook his head in disappointment.

With 40 seconds left in the game, James bid goodbye to his son and headed back to Boston for the Lakers' game against their arch-rivals.

Little did James know that he was in for another disappointing basketball game. The opening quarter had the makings of a close duel, but as the game progressed, the Lakers kept on missing open shots while the Celtics kept on hitting.

The four-time MVP had 13 assists but crawled his way to 15 points on 5-of-12 shooting.

Anthony Davis and Rajon Rondo were back in the Lakers' lineup, but their efforts did not translate into victory. Davis played 22 minutes and just had nine points and four rebounds while shooting 3-of-7 from the field.

Rondo had 13 points and three assists and was one of the few bright spots for the Lakers. As a team, they were held to just 43.8 percent from the field and 26.9 percent from downtown.

LeBron James and the Lakers will have a chance to redeem themselves at Madison Square Garden on Wednesday when they face the New York Knicks.