Murray and Federer had both watched from afar on Thursday as Djokovic, the defending champion and six-time winner, suffered a stunning defeat to 117th-ranked Denis Istomin.
Counter-puncher Somdev, at the age of 31, announced his retirement from tennis on Sunday, having represented India in the Davis Cup in 14 ties with 14 wins and 10 defeats in singles.
Asked if he will think of retiring if he gets to record 43rd Davis Cup win, Paes replied:"You will see."
Devvarman won gold medals at the Guangzhou Asiad and Delhi Commonwealth Games in 2010.
Murray, succumbed to a surprise loss to Belgian David Goffin on Friday, having ended the official season with a 24-game string of wins.
The third Indian player in action in the qualifier, Sasi Kumar Mukund went down fighting to Argentine Nicolas Kicker.
Murray, previously honoured with an OBE in 2012, earlier this month he was voted the BBC Sports Personality of the Year for a record third time.
India has a third entry in the form of Prajnesh Gunneswaran, who faces off with Japan's Hiroki Moriya.
Nadal and Goffin will meet for the first time on Saturday.
The 17-time Grand Slam champion has not played a match since July when he tumbled during the final set of a loss to Milos Raonic in the semi-finals at Wimbledon.
Williams, 35, and Ohanian, 33, did not reveal a wedding date in the postings, listed under the Reddit tag `isaidyes`.
We take a look at some of the players who retired from professional tennis this year
Murray has won nine titles in 2016, including Wimbledon and the Olympic gold medal, and thrashed Djokovic in the final of the ATP Tour Finals
Ivanovic became the first Serbian woman to win a grand slam tournament when she beat Russian Dinara Safina in the 2008 French Open final,
Sania came close to a historic Olympic medal in company of Rohan Bopanna but the Indian combination snatched defeat from a winning position in Rio.