WORTH NOTING ON TV

* SUNDAY

US Open Tennis Championships (CBS, 12:30-6 p.m., EST): Live coverage of early-round play from the USTA National Tennis Center in New York's Flushing Meadows. * MONDAY

Nightly Business Report (Public stations; please check local listings for time): Japan and the United States may not have agreed yet on trade differences, but they did cooperate in debating the issue via satellite in this unusual dual broadcast, airing as a special edition ``Nightly Business Report.'' Across half the world, two panels - one here, one in Japan - will discuss and debate trade options and ways to avoid a potential US imposition of trade sanctions against Japan.

The international talk show boasts a roster of notable experts from industry, government, and academia. On the US side it includes Clayton Yeutter, who was US trade representative and agriculture secretary in the Reagan administration, and George Packard, Dean of the Johns Hopkins School of Advanced Inter- national Studies in Washington, D.C. * TUESDAY

Fred Rogers' Heroes: Who's Helping America's Children

(PBS, 8-9 p.m.): The people featured in this program are realistic, constructive in approach, and committed to the vulnerable people in our society.

If that makes them sound a lot like Mr. Rogers, it's because these heroes are being saluted by him, in a program about those who bring hope to others without making a big deal out of it.

Rogers visits people like Carola de la Rocha, a choreographer who teaches dance to kids in her South-Central Los Angeles neighborhood and never turns anyone away for lack of funds. She and three others get the spotlight they deserve in a show about helping hands in places where they are desperately needed.

Please check local listings for these programs.