Maryland Attorney General Stephen H. Sachs announced the indictment of two harness drivers today by a Worcester County grand jury on two counts of theft and one of conspiracy arising out of an investigation into fixing of harness races at Ocean Downs.

The drivers, Robert W. Clark and John T. Lister III, surrendered to police in Berlin, Md., and were taken before Circuit Court Judge Dale R. Cathell, who released them on their own recognizance. They are expected to be arraigned within 30 days. If convicted, each could face up to 30 years' imprisonment and up to $2,500 in fines.

The indictments stem from an investigation into irregular betting patterns by assistant Attorney General Bruce Spizler, the Maryland Racing Commission and the state police.

In the feature race at Pimlico today, Allen Stacy, the nation's leading apprentice, saved ground astride Hail To Nauset throughout the 1 1/16 miles to win by nearly a length over the favorite and pacesetter, Sportive, ridden by Mario Pino.

Boulder Talk was third.

The winner paid $20.60 and capped a 6-1 exacta worth $79.80.

Pimlico will accept advanced wagering on Saturday's 112th Kentucky Derby Friday and the Derby will be simulcast at Pimlico as the track's 10th and final race Saturday.