Dutt, bronze medal winner in the previous Games in London four years ago, failed to sign off his Olympic career with a podium finish, losing in the opening round to Mongolian Ganzorigiina Mandakhnaran whose quarterfinal defeat dashed the Indian's hopes of a second career bronze through repechage.
The other contenders on day 15 were three male marathoners, two of whom managed to clock their personal best times.
In 2012 India had secured their highest medal tally from a single Games -- six, without a gold -- and there were pre-Games projections by the Sports Authority of India that the tally will be doubled here.
But all those were dashed to the ground and India were saved the blushes at the fag end of their campaign by two women who were never highlighted as medal hopes - Sindhu who got the first-ever silver in badminton after Saina Nehwal's bronze in London and Sakshi who secured the first-ever medal in women's wrestling.
Also Read
However, Mandakhnaran went down 0-6 to Russia's Soslan Lyudvikovich Ramonov, the gold-medallist at the 2014 World Championship in Tashkent, in the quarterfinals to end the Indian grappler's dream of signing off with a medal.
The seven-member Indian wrestling team thus finished its campaign with just a solitary bronze won by Sakshi Malik in the women's 58kg category. The squad was originally eight-strong but Narsingh Yadav was ousted after being slapped with a doping ban by the Court of Arbitration for Sports.
The 33-year-old grappler from Haryana, had bagged a bronze in the 60kg category at the London Games and was expected to repeat the feat in the 65kg weight division.
The early elimination of Yogeshwar, following the loss of the Mongol to his tough Russian rival Romonov later in the quarters, spelt finish to his medal hopes.
Meanwhile, in the men's marathon - held on rain-drenched streets, T Gopi, Kheta Ram and Nitendra Singh finished 25th, 26th and 84th respectively.