India, Aug. 30 -- Kamil Majchrzak has found the young fan who missed out on his souvenir cap after an adult grabbed it during the celebration of his US Open victory.

The 29-year-old upset ninth seed Karen Khachanov in a five-set battle on Thursday on Court 11. After the match, Majchrzak took off his cap and tried to give it to a boy in the stands, as reported by Daily Mail.

A man standing next to the child reached over, took the cap, and shoved it in his bag while the boy looked on, upset, asking, "what are you doing?" The player walked away without realizing what had happened.

The clip spread quickly online, with many calling the man "selfish" and "a jerk." On Friday, Majchrzak posted on Instagram asking for help to find the boy. He s...