Mary Decker, whose fall in the 3,000-meter final of the 1984 Summer Olympics has been the subject of much controversy, says she is ready for her first competitive appearance since then.

"I can't wait," Decker said of her 2,000-meter race tonight at the Sunkist Invitational indoor meet in Los Angeles.

One of her opponents will be U.S. Olympic teammate Ruth Wysocki, who was quoted recently as saying she thought Decker owes Zola Budd an apology for her remarks about Budd after the fall.

"I can only say Ruth may have done me a favor," said Decker. "She may have motivated me to run faster Friday night."

Decker said she has recovered from the hip injury suffered in the collision with Britain's Budd.

"I feel really good," she said. "It took about eight weeks for the injury to heal. I started back gradually, and I haven't had any recurring injuries."

She said she plans to limit her indoor schedule to three races: the Sunkist 2,000, the mile at the Millrose Games in New York Jan. 25 and the 1,500 in the Vitalis U.S. Olympic Invitational in East Rutherford, N.J., Feb. 9 . . .

In Paris, the first World Indoor Track and Field Games will get under way today, with nearly 400 athletes from 74 countries taking part in the two-day competition.

Fifteen medalists from the Summer Olympics, including five champions, are scheduled to take part in 24 events, 13 for men and 11 for women.

Chandra Cheeseborough, a triple medal winner in Los Angeles, is on the 23-member U.S. team. Cheeseborough won gold in Los Angeles in the 400- and 1,600-meter relays and a silver in the 400. She entered the 60-meter dash in Paris.