TAMPA, JAN. 23 -- Although Sunday's Super Bowl between the New York Giants and Buffalo Bills almost surely will be played as scheduled, the National Football League continues to monitor the war in the Persian Gulf and, according to league sources, has a contingency plan to play the game on Monday or Tuesday should events in the region warrant a delay.

A league official, who asked not to be identified, said that though the game probably will be played on Sunday there have been discussions as recently as yesterday to postpone the game by one or two days.

Giants owner and president Wellington T. Mara told Newsday today that the NFL notified him late last week that, if events in the Persian Gulf dictate a delay, the game would be postponed.

Last Friday, NFL Commissioner Paul Tagliabue said the league would postpone the conference championship games on Sunday if the television networks opted to cover the Persian Gulf War instead of football. But the games were played, although both CBS and NBC cut to news periodically. ABC is scheduled to televise the Super Bowl.

"We expect to play the game as scheduled," said Jim Heffernan, director of public relations for the NFL.

In a statement on Monday, NFL Vice President of Communications Joe Browne said the league expects the game to be played as scheduled.

Kickoff for the silver anniversary Super Bowl is scheduled for 6:18 p.m. at Tampa Stadium.

One of the NFL's main concerns this week, besides what happens in the gulf, has been security. This week reporters entering the stadium had to be checked by security personnel. If the game is played on time, anyone entering the stadium will have to walk through a metal detector.

The city of Tampa, with security heightened at all Super Bowl related events, is reviewing various functions daily.

In related events, the Federal Aviation Administration, at the request of the FBI, yesterday announced tight restrictions on airspace in the Tampa area on Sunday.

The FAA said that between noon and 11:59 p.m. only planes landing or taking off from Tampa International Airport will be allowed in the Tampa terminal control area, which includes the airspace above the stadium.

Planes authorized to be in the airport area by air traffic controllers cannot fly below 5,000 feet within a half mile of the stadium.

The only exceptions allowed within a half mile of the stadium would be those on essential government business, medical emergencies and aircraft connected with official event activities that have been approved in advance by the FBI Tampa office. Those approved by the FBI then must file flight plans with the FAA.

In other security implications having to do with the war, NBA officials are reviewing security measures for next month's All-Star Game, a league official said.

"It's a situation we are looking at very seriously," said Stephen Mills, the NBA's vice president for special events. "At some point between now and All-Star weekend, if any changes are made, we will make an announcement."

Mills said the All-Star Game always warrants extra security precautions. But with growing fears of terrorist attacks in the United States, those measures may be increased, he said.

"Our security department has spent a lot of time in Charlotte {N.C.} meeting with local and state officials," Mills said. "We're in a situation that changes daily. We still have two weeks to go, so we want to be flexible."

None of the events surrounding the game at the Charlotte Coliseum has been canceled or changed, Mills said.

Also, the International Tennis Federation agreed today to postpone a first-round Davis Cup match between the United States and Mexico for nearly two months because of security fears.

The federation, acting on a request by the United States Tennis Association, put off the competition scheduled for Mexico City during Feb. 1-3 to March 29-31, and even that date is tentative, said Thomas Hallberg the ITF's director of men's tennis.

Tennis officials also wondered if Mexico might consider switching the site to the United States.

Seven other Davis Cup matchups were also put back to the end of March for the same security reasons.Staff writer Don Phillips also contributed to this report.