Oft-injured Mary Decker Slaney, the nation's top women's middle-distance runner, will skip the 1988 indoor track season because of an injured right calf, her coach said.

Luiz de Oliveira said Slaney, who has not competed since Feb. 28, when she set a course record of 32 minutes 3 seconds in winning a 10-kilometer (6.2-mile) race in Phoenix, would "take off the next 15 days {from practice}. . . and see how she reacts to the injury."

De Oliveira said the calf began bothering Slaney again during a road workout less than 10 days ago.

He said, however, that the injury did not appear serious. But with the Olympics a few months away, de Oliveira said it was not worth the risk of greater injury to compete indoors.

"Winning an Olympic gold medal is now the major goal in my career," Slaney was quoted as saying by Advantage International, her management firm. "I don't want to risk any more injuries by racing indoors."

The calf is the same that Slaney injured during the 1985 U.S. Olympic Invitational -- the last time she competed indoors. She missed the 1987 outdoor season because of surgery on her right Achilles' tendon.

Slaney, who missed the 1976 Olympics because of injury and the 1980 Moscow Games because of a U.S.-led boycott, failed to win a medal in the 1984 Los Angeles Olympics when she collided with Britain's Zola Budd during the 3,000-meter final and went sprawling onto the infield, injuring her ribs . . .

Abdi Bile, the George Mason University student from Somalia who is the world champion in the 1,500 meters, will face a tough five-member field in the mile at the Mobil 1 Invitational indoor meet at George Mason Feb. 14. The opposition: Marcus O'Sullivan from Ireland, who is the 1,500-meter indoor world champion; defending meet champion Sydney Maree, the American-record holder in the 1,500 with the third-fastest time ever; Steve Scott, the American-record holder in the mile; Jim Spivey, third in the 1,500 at the world championships in Rome, and Ray Flynn, who holds the Irish mile record.