You know a ball girl or ball boy has done a good job during a tennis match when you don't notice them. Lucky for one ball girl on Sunday, Grigor Dimitrov did notice her.
Dimitrov, ranked 16th in the world, was competing in a first-set tiebreaker against Kei Nishikori at the
Sensing she was struggling with the heat, Dimitrov gently escorted her off the court, holding her hand all the while, and made sure she received some medical attention.
Dimitrov lost the match, but won the hearts of the fans.
You can watch it all in the video above.