"It is really incredible, a year ago I was literally fighting for my life at the hospital after having the baby."
Osaka will face Spain’s Carla Suarez Navarro and USA’s Madison Keys.
Six time champion entered into the semifinals of US Open after defeating Czech Republic's Karolína Pliskova.
The loss against Millman was Federer's first against a player outside the world's top 50 at the US Open.
Serena Williams is entering the quarterfinals of the tournament for the 15th time in her career.
India completed in 8th position with 15 gold , 24 silver and 30 bronze.
The performance of the Indian team was astonished their opponents in the semifinals which held on friday.
Amit Phangal clinched India's first gold in boxing in the ongoing edition of Asian games.
India's total medal tally is now 62 with 13 gold, 22 silver and 27 bronze.
Indian athlete Swapna Barman on Wednesday won a gold medal in women’s Heptathlon Athletics event.