Annu was on the verge of ending her campaign after starting with a foul throw and 55.35m in her second try but sent her spear to 40cm short of 60m in her third and final attempt on the fifth day of competitions here.
She finished fifth in the Group B qualification round and made it to the finals as eighth best across the two groups. The 29-year-old national record holder must, however, be disappointed as she failed to touch the 60m mark but she now has the chance to make amends in the finals on Saturday (6:50am IST).
She has a season's and personal best of 63.82m. Those who touched 62.50m mark or the best least 12 best performers across the two groups made it to the finals.
Only three competitors could get past the automatic qualification mark of 62.50m. Season leader Maggie Malone of USA failed to make it to the finals after finishing 12th in Group B and 22nd overall with a best throw of 54.19m while defending champion Kelsey-Lee Barber of Australia made it to the medal round as fifth best performer with a best effort of 61.27m.