The 11-year-old girl represented New York-based Smile Train, which helped her receive free cleft treatment in 2007.
Smile Train is world's largest cleft lip and palate non-profit organisation, which was chosen as the charity partner to perform the flip of the coin at the men's singles event.
Smile Train aims to provide free surgeries to people born with cleft lip and palate.
Pinky, whose life was captured in the Oscar winning documentary 'Smile Pinki', also travelled United States in her tour to share her story.
After watching the match, Pinki will have lunch in the Competitors' Restaurant. During her stay in London, Pinki will partake in additional events in honour of the tournament, including meeting with many of Smile Train's supporters.
Doctor Subodh Kumar Singh, who performed Pinki's cleft surgery in 2007, is accompanying her on the tour.