BEIJING -- U.S. welterweight Demetrius Andrade wanted a little revenge for a loss he took as a wide-eyed teenager in a cold Russian town.
Zhang Xiaoping hoped to prove China's early Olympic boxing success is no hometown concoction.
And when Andrade and Zhang were done, they had added two more names to the shockingly long list of Russians going home early from Beijing.
Zhang upset light heavyweight Artur Beterbiev 8-2 on Thursday at Workers' Gymnasium, and Andrade easily stayed on track for a medal with a 14-3 thrashing of Andrey Balanov.
The losses left just six fighters in the field for Russia, which was widely expected to be the games' dominant power over a young Cuban team. Instead, four Russians were picked off in the last two days of preliminary bouts, while Cuba still has nine fighters in the field.
Andrade was far too much for Balanov, who only scored one point -- he got two more on a curious penalty against Andrade for ducking. The American's technically superb victory avenged a loss to the 32-year-old Balanov in Russia back in early 2005 when the current world champion welterweight was a raw prospect from Providence, R.I., on his first international trip.
"He was the first person I ever fought over, maybe, 22," Andrade said. "I was real nervous. I'm only 16, I've got no power, I can't hold the guy. I went in there and did my thing, but I learned from it, and it got me to where I am today."
That's one victory from a guaranteed medal, and three wins from gold. He'll fight South Korea's Kim Jung-joo on Sunday for a semifinal place.
Zhang got a few curious points from the judges, but still controlled his fight with another Russian disappointment. Beterbiev, who finished second in last year's championships, didn't score after the first round and seemed to have no strategy to beat his tall, long-armed opponent.
Zhang turned the fight into a hug-a-thon at times, but scored enough on the outside to win.
"I had the psychological advantage, because my opponent is stronger than me, so I have no pressure," Zhang said. "Secondly, my strategy is quite good. I took advantage of my height and kept distance from my opponent."
Chinese welterweight Hanati Silamu also beat overmatched Joseph Mulema of Cameroon 9-4 to advance within one victory of a medal. China, which has never won gold in a sport banned by under Chairman Mao Zedong, has seven boxers still alive in the Olympics -- unbelievably, more than the Russians.
At least light welterweight Gennady Kovalev slowed the Russian slide in the evening session with an 11-2 win over Richarno Colin of Mauritius.
