Niall Horan & Kelly Rowland Return for U.S. Open Day Five

Niall Horan intently watches a match during day five of the 2015 U.S. Open on Friday (September 4) in New York City.

This isn’t the first day the 21-year-old One Direction singer has attended the tennis tournament. Niall was spotted enjoying a game during day two of the Open.

PHOTOS: Check out the latest pics of Niall Horan

Other celebrities in attendance included Kelly Rowland, who also stopped by a match earlier in the week, and golfing pro Tiger Woods along with his eight-year-old daughter Sam (not pictured).

10+ pictures inside of celebrities enjoying day five of the U.S. Open…