Los Angeles Lakers guard Quinn Cook was one of the most successful players in the history of Duke's basketball program. He was a three-year starter during his time with the Blue Devils and was named second-team All-ACC in 2015.

However, as is so often the case, the most successful collegiate players are not always the most appealing to NBA teams. Cook entered the NBA draft after his senior year but was not selected.

However, the Lakers backup guard found comfort in speaking with one of his childhood friends: Brooklyn Nets star Kevin Durant.

Durant said Cook called him in distress after going undrafted, but Durant — knowing Cook's work ethic — implored him to get back in the gym.

“[Cook] called me when he didn't get drafted, and he was crying,” Durant said in the documentary “Basketball County: In the Water” (via Tyler Conway of Bleacher Report).

“And I'm like ‘Bro, you've got talent. Just keep working.' He never stopped.”

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Quinn Cook did keep working.

The Washington, DC native spent two years in the G League, constantly battling for a spot on an NBA roster. He got his chance in 2017 when the Dallas Mavericks took a shot at him.

Cook would have to keep fighting. He was sent back to the G League after a short stint with the Mavs and New Orleans Pelicans.

Conveniently enough, Durant's former team (the Golden State Warriors) came calling. Cook became a key backcourt reserve for the Dubs, helping them win the 2018 NBA championship.

Cook parlayed his success in Golden State into a two-year deal with the Lakers this past summer. His work ethic and dedication have paid off, thanks in part to some encouragement from Durant.