Krishna, who had won the Commonwealth Games gold, registered 63.16 metres during the event here on Tuesday.
Krishna hoped she could cross the 65m barrier during the Games.
Her husband and coach Virender was also happy with the result. “Today’s throws show we are on track to deliver peak results during the Olympic Games. Hitting big distance in the opening rounds is essential to remain in contention and that’s what Krishna achieved today with 63m opener,” said Virender.
But Poonia still has a long way to go as her fellow competitors have gone well above the 65 metres mark.
Germany’s Nadine Muller, favourite to win the gold in London and a silver medallist at last year’s World Championships, best this season is 68.89 metres. Besides Nadine, Cuba’s Yarelys Barrios (68.03 metres) has the second best distance while China’s Yanfeng Li (65.85 metres) and Jian Tan (64.90 metres) have also produced better marks than Poonia.