Break Point (2014) on Netflix

Plot summary

Jimmy Price has spent years on the pro doubles circuit, and his behavior there has burned nearly every bridge he had. When his latest partner drops him, he looks outside the tennis world for a partner. He approaches his estranged brother Darren, who was his tennis partner as a child and now works as a substitute teacher, and persuades him to team up with him. The two are a mismatched pair, and an unusual 11-year-old named Barry helps them along. They take aim at a grand slam tournament, where the brothers have to find their game and each other again.