Seoul, South Korea ? At the North Korean border, the United States and South Korea are allies. When it comes to sports these days, the relationship is tense, adding even more intrigue to their upcoming World Cup game.

Trouble began Feb. 20, when Kim Dong-sung was first across the line in the 1,500-meter short-track speedskating final at the Salt Lake City Olympics. But the South Korean was disqualified for improperly blocking Apolo Anton Ohno with a half-lap to go, giving the gold to the 19-year-old American.

South Korea threatened to sue and boycott the closing ceremonies. Anger increased when Jay Leno, during his monologue on “The Tonight Show,” said Kim “was so mad he went home and kicked the dog, and then ate him.”

In a front-page story Friday, The Korea Times said “the negative feelings against Ohno stoked anti-American sentiment, and this was compounded by what locals perceived to be the heavy-handed approach by Washington to force Seoul to choose a U.S. company for its multibillion-dollar fighter jet acquisition project.”

There also is lingering anger about Spc. Christopher K. McCarthy of Concord, N.H., who is serving a six-year term in a South Korean jail for killing a bar waitress who refused to have sex with him.

“I think we should defeat the Americans, whose arrogance we witnessed in the Ohno episode in the Winter Olympics,” 16-year-old Lee Sook-hee of Gyeongju said Friday. “So I think this is a good chance to avenge the injustice.”

South Korea and the United States won their first-round World Cup openers, and it’s possible the winner of Monday’s game in the southern city of Daegu will clinch a berth in the second round.

Thousands of South Koreans are rallying behind their team, wearing red shirts that say, “Be the Reds,” and pep rallies repeatedly are shown on television.

“The atmosphere should be amazing,” said U.S. forward Joe-Max Moore, a veteran of tough crowds in Central America. “Fortunately for us, I think the stands are quite a way back from the field, so they won’t be right on top of us. But there’s no doubt that it’s going to be hard to talk and hard to communicate between the players.”

In the South Korean capital, the Seoul Metropolitan Police Agency said up to 5,000 officers will patrol the streets, where tens of thousands of people are expected to gather to watch the game on jumbo TV screens.

The screens are just one block from the U.S. embassy, which will close at noon, 31/2 hours before kickoff (1:30 a.m. CDT) to allow staff to watch.

On Feb. 9, 15 college students were detained for questioning after they attempted to enter the embassy to protest a visit by President Bush.

“We are aware of all the bad news about rape and other crimes committed by some U.S. troops, so, yes, we will have a little bit of anti-Americanism when we cheer for our team,” Choi Dae-woong, an 18-year-old fan from Gyeongju, said Friday.

There are about 37,000 U.S. troops in the country, and President Kim Dae-jung has said rising anti-Americanism hurts South Korean interests.

Leno’s remarks led to widespread condemnation in the country, sensitive to criticism about South Koreans who eat dogs. Former Prime Minister Kim Jong-pil told South Korean reporters Leno was an “ill-mannered, ugly guy,” according to The Korea Herald.