Chernova wins Russia's 10th Olympic bronze
Chernova was placed sixth before the final event, but a great display in the 800 meters and the disqualification of Germany’s Lilli Schwarzkopf propelled her to the second spot on the podium.
The 24-year-old scored 6,628 points, but when the referees decided to forgive Schwarzkopf – who had 21 points more – her silver turned into bronze.
Meanwhile, the gold went to Jessica Ennis of Great Britain, much to the delight of the 80,000-strong Olympic crowd.
The home favorite prevailed confidently, with the overall result of 6,955 points.
In heptathlon, women must complete the 100-meter hurdles, high jump, shot-put and 200-meter sprint on the first day and the long jump, javelin throw and 800-meter run on the second day of the competition.
Team Russia now have 28 medals (3 gold, 15 silver and 10 bronze) in the bag, concluding the Top 10 in the medals count at the London Games.