Serena Williams personally signed this 2018 US Open hat in gold marker. Serena lost in the final of the tournament to Naomi Osaka in a famously controversial match: she received warnings and penalties for coaching and racket abuse in an umpire decision that made headlines throughout the world. Serena retired at the 2022 US Open after winning an Open Era record 23 Grand Slam singles titles. The hat has been authenticated by Beckett with Certification # BK51730.