Born in St Petersburg, Russia, Grigorieva won the Gold medal for the womens pole vault in the 2002 Commonwealth Games at Manchester, England. Her win made it a trifecta for Australia in the event, with Kym Howe winning silver and Brigid Isworth bronze.
Prior to 2002, Grigorieva won the silver medal at the 2000 Summer Olympics in Sydney, Australia, at a height of 4.55 metres. It was the first Olympics which featured the womens pole vault event.
Grigorieva has also appeared in Australian commercials and featured in sport magazine spreads.