Quinn Cook had a storied career at Duke, starting three of his four years and helping lead the Blue Devils to a 2015 national championship.
"[Cook] called me when he didn't get drafted, and he was crying," Durant said in the Showtime documentary Basketball County: In the Water. "And I'm like 'Bro, you've got talent. Just keep working.' He never stopped."
Basketball County follows the journeys of several players from Prince George's County in Maryland who went on to successful NBA careers, including Cook and Durant.
"KD has always been a big brother to me and someone that I reached out to for anything," Cook told Insider's Meredith Cash. "He's reached out to me just making sure I was OK. He's always been there for me."
Cook battled his way through a two-year stint in the G League before making his NBA debut in 2017. He bounced his way around from the Dallas Mavericks to the New Orleans Pelicans and back to the G League before carving out a role with the Warriors—with Durant as his teammate. Emerging as a solid bench contributor in Golden State, Cook and Durant won a championship together in 2018.
The Lakers signed Cook to a two-year, $6 million deal last summer. Currently, he is averaging 4.8 points and 1.1 assists in 38 games with the Lakers (10.8 minutes per game).
While Cook's NBA future appears to be at the fringes of a contender's rotation, his story is one of success and perseverance. Rather than cashing in on a potential overseas contract, Cook battled stateside to realize his NBA dream.