Name the Indian player who won gold at the 2019 BWF World Championships.

Indian badminton and World number five PV Sindhu won gold at the BWF World Championships 2019. She became the first-ever Indian badminton player to win a gold medal at the event. PV Sindhu defeated world number four Nozomi Okuhara of Japan and secured 21-7, 21-7. This is her fifth medal at the world championships. With this, she has become only the fourth singles player ever to have a full set of world championship medals.