She’s the only woman to have competed in all four Olympic Games since women were admitted in 2000.
World number one Laura Asadaukaite is in great shape in the battle for the final Olympic gold of London 2012. She came third, just two wins adrift of Rublesvska. The Lithuanian will be hard to pass in the final combined running and shooting event if she can perform well in the swimming and show jumping.
Defending Olympic champion, Lena Schoneborn of Germany, is reasonably well placed after the first of the five disciplines, lying in joint 11th place with 19 wins.
In second place as we head from the Copper Box to the Aquatics Centre, is 21-year-old Hungarian Adrienn Toth who won 24 of her 35 contests.
Fencing is the favourite discipline of reigning world champion Mhairi Spence. The Briton was a little below par in front of the passionate home fans and goes to the second event in 11th equal.
The other British competitor, Samantha Murray had a terrible start as she lost her first seven bouts. But she has come back really strongly to move up to 16th position. Murray will expect to be higher after the 200 metres freestyle in the pool.
Team GB Manager Dominique Mahony stated: "It was a really good fightback from Sam after starting slowly and not moving well. As soon as she started to move she started to dominate her fights. Once she got her act together she really got going.
Spence was disapointed with the fence after starting so strongly, she didn't have a bad run at any stage, but there were too many fights that she would have normally won that she loss. She struggled to keep up the momentum round to round."
Amelie Caze of France will be disappointed to have won only 19 of her 35 contests in her strongest discipline.
The fencing event sees every competitor fighting each other with the epee. Each fencing victory is worth a six-second head start in the final combined running and shooting event, when the points secured in the first three events are converted into time handicaps.