"The NFL denies that names of any other players in the league have been introduced into its investigation of alleged gambling activities on the part of one individual." That's the official response to a Cleveland Plain Dealer story, quoting a "source close to" the probe involving Art Schlichter, that the Colts' substitute quarterback may be just one of at least a dozen players deeply into betting--some of them "hard-core gamblers," some wagering on football and not just on basketball . . .

Denials from elsewhere to allegations by Coach Chuck Lucidore of Freedom Area High School, Beaver County, Pa., in a copyright article in the Pittsburgh Post-Gazette. Lucidore charged that a U. of Oklahoma "supporter" offered him $3,500 if he would arrange a campus visit by his 1982 all-America lineman, Chuck Williams. Oklahoma assistant Charley North calls the charge "asinine," saying, "That could have been anybody (like somebody trying to get OU in trouble?) on the phone." Lucidore added that when lineman Jimbo Covert (Chicago Bears' Round 1 draftee from Pitt) was being recruited, Clemson "flat out offered me an assistant coaching position if Jimbo would go there." Tom Moore, then a Clemson staffer and now head coach at The Citadel, labels the accusation a "flat-out lie" . . .

The San Diego Chargers make yet another move to improve their defensive secondary, trading picks in rounds 3 and 8 of 1984 draft for St. Louis Cardinal Ken Greene, who was a No. 1 in 1978 . . . Ex-Redskin, 13-year, sometimes all-pro cornerback Lemar Parrish has been waived by Buffalo, which also announces retirement of linebacker Isiah Robertson, 12-year man (six-time Pro Bowl) with Rams and Bills . . . In Baltimore, three years in prison imposed on 1975-77 Colts tight end Jimmie Kennedy for trafficking in cocaine and marijuana.