Veteran heavyweight boxer Earnie Shavers has been granted a license to fight in New York, the State Athletic Commission announced yesterday.

Shavers suffered a detached retina in his left eye in a World Boxing Council title fight against Larry Holmes Sept 28 and underwent surgery to repair the retina the following month.

The 35-year-old Cleveland boxer was scheduled to meet Gerry Cooney in the Nassau Coliseum Aug. 2, but Cooney tore muscles in his back while working out earlier this week and the bout was canceled.

Security is being beefed up at Baltimore's Memorial Stadium in the wake of vandalism during the night of July 2 that left an obscene phrase burned into the infield grass.

The city's Department of Parks and Recreation, which operates the stadium, has announced that uniformed police have started guarding the park at night. In addition, all but one gate at the stadium where the Baltimore Orioles play will be locked when events are not being held there.

The San Diego Chargers, getting a jump on the rest of the National Football League, have opened training camp at La Jolla, Calif.

Among early workers will be kicker Rolf Benirschke, who is attempting to win back his job after recovering from a near-fatal stomach virus.

"He's fine, super," said Coach Don Coryell. "His weight is up to 170 and he's just kicking heck out of the ball, kicking better than ever, if that's possible."

His team is in last place, the front office is under fire, but the popularity of San Diego Padre Manager Jerry Coleman hasn't waned.

The first-year manager, appointed after spending eight years as the club's play-by-play broadcaster, received overwhelming support in a poll taken this week by a San Diego radio station. Of 125 persons surveyed, 86 percent said Coleman was doing a good job, despite the team's 34-48 record.

Earlier in the week, in a similar poll, 84 percent agreed with the firing of Bob Fontaine, Padres' vice president and general manager.

Luther (Ticky) Burden, who earned more than $100,000 yearly playing guard for the New York Knicks, has been bailed out of a Mineola, N.Y., jail on a bank robbery charge.

It was not immediately known who posted the $25,000 bond for Burden, scheduled to return to court July 21 for a hearing on the charge.

In requesting a reduction in bail, Attorney Harvey Greenberg said there was "serious doubt" that Burden was involved in the $23,164 holdup July 3 of the Guardian Bank of North America in Hempstead, N.Y.

"Two days before this robbery, Burden received a $15,000 deferred payment from the Knicks," Greenberg said. The attorney also noted that Burden had an account at the Guardian Bank.