Updated

U.S. flagbearer Mariel Zagunis and countryman Seth Kelsey reached the semifinal rounds in the women's sabre and men's epee, respectively, Wednesday at the London Games.

Zagunis, who led the Americans into Olympic Stadium last week at the opening ceremony, has won gold in her event at the last two Summer Games, beginning with the discipline's introduction eight years ago in Athens.

The 27-year-old also won bronze in the sabre team competition at the 2008 Beijing Games. Zagunis, the top seed in the women's sabre draw, will battle Jiyeon Kin of South Korea tonight for a spot in the gold medal match.

While the top-seeded Zagunis was expected to go far in her event, Kelsey has made a shocking run to the semifinals of the men's epee. The tournament's 17th seed, Kelsey defeated Estonia's Nikolai Novosjolov -- the top-ranked epeeist in the world -- in the Round of 16, before moving to the semis.

Kelsey will face Ruben Limardo Gascon of Venezuela in the semifinals. Gascon is the highest seed left in the men's tournament at No. 12.