India's [ Images ] campaign at the World Boxing Championships in Chicago got off to a disappointing start with S Suresh Singh crashing out in the opening round of the bantam weight category.

Suresh, a reigning national champion, was beaten 4-9 by Hungarian David Oltvanyi on the opening day of the meet, which is also the first qualifying event for next year's Beijing [ Images ] Olympics [ Images ].

Making the quarterfinals of the showpiece event would be enough to earn an Olympic qualification.

The Indians, who are also competing in seven other categories, are up against a formidable field in the biggest ever championship, which has over 120 countries and 700 boxers.

One of the best bets for India would be Commonwealth Games [ Images ] silver medallist and Doha Asian Games bronze winner Vijender [ Images ]. But the Arjuna awardee middle weight pugilist has a challenging task at hand as he bids to book a Beijing berth.