Justin Bieber may be a big sports fans, but Los Angeles Clippers fans aren't exactly big on him.
The 20-year-old pop star got a chilly reception Sunday, as he sat courtside at Staples Center in downtown L.A.
"The entire placed booed him when Staples Center cameras put him on the jumbotron," a source told E! News.
Bieber and his mom Pattie Mallette, 38, were there to watch the Clippers take on the Oklahoma City Thunder in game four of the NBA playoffs.
Despite getting booed, Bieber and Mallette appeared to be having a great Mother's Day at the game.
She snapped a selfie of the two, and the Biebs even tweeted a fun pic of Mallette holding a hotdog along with the caption, "Took my mom to the game.. She's more focussed on the food."
Earlier in the day, the "Beauty and the Beat" singer tweeted his love for mom, writing," Happy Mother's Day to my amazing mom @pattiemallette. I love u with all my heart!! #HonorThyMother #HappyMothersDay."
BTW, for those of you keeping score, the Clippers beat the Thunder 101-99.