India conceded a match-winner to Belgium just 15 seconds from close to lose 2-3 after keeping their higher-ranked rivals at bay for most part of the match.
They even led midway in the second session, a situation that seemed to have pleased Walsh.
"I would say that we're now getting competitive against the big teams. Our show's much better than what we were doing earlier," said Walsh, asserting that the Indian players need to realise that the score-line is what matters in the end.
India's opponent in the next outing tomorrow will be England, who were held to a 1-1 draw by Spain in their first Group A match yesterday.
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After falling back to defend for most of the first session that ended with a late goal for the Belgians, India came back strongly after the interval.
Scoring twice in succession through Mandeep Singh and Akashdeep Singh, India enjoyed a short-lived lead midway through the second half, but some defensive lapses conceded victory to Belgium.