I'm excited to announce that I have turned pro, and signed with @IMG Thank you to everyone for all your continued support! Let's go👏🏻— CiCi Bellis (@cicibellis99) September 13, 2016
"She's a great young, really talented player," Kerber said of Bellis after her 6-1, 6-1 win at the Open. "For sure she will have a great future."
Bellis, then 15, became a fan favorite at Flushing Meadows in 2014 when she upset 12th-seeded Dominika Cibulkova. The California native is currently ranked 120th in the world.
Bellis, who left her $140,000 US Open paycheck on the table earlier this month, had committed to Stanford.