In what year was the well known Indian athlete whom O. M. Nambiar coached born?
P. T. Usha Pilavullakandi Thekkeparambil Usha (born 27 June 1964), popularly known as P. T. Usha, is a retired Indian track and field athlete. She has been associated with Indian athletics since 1979. She is often called the "queen of Indian track and field". She is nicknamed as the Payyoli Express. Currently she runs the Usha School of Athletics at Koyilandy in Kerala.
Mary Kom Chungneijang Mery Kom Hmangte (born 24 November 1982), better known as Mary Kom, is an Olympic Indian boxer hailing from the Kom tribe in Manipur. She is a five-time World Amateur Boxing champion, and the only woman boxer to have won a medal in each one of the six world championships. Nicknamed "Magnificent Mary", she is the only Indian woman boxer to have qualified for the 2012 Summer Olympics, competing in the flyweight (51 kg) category and winning the bronze medal. She has also been ranked as No. 4 AIBA World Women's Ranking Flyweight category. She became the first Indian woman boxer to get a Gold Medal in the Asian Games in 2014 in Incheon, South Korea.