Enos Slaughter, 68, and the late Arky Vaughan are baseball's newest Hall of Famers.

The Veterans Committee picked them yesterday for induction July 28 in Cooperstown, N.Y., along with outfielder Lou Brock and reliever Hoyt Wilhelm, whom the writers elected in January.

Slaughter became legendary by scoring the St. Louis Cardinals' winning run in the 1946 World Series while Boston Red Sox shortstop Johnny Pesky hesitated on the relay. In 19 major-league seasons since 1938, he compiled a .300 average, twice led NL outfielders in assists and hit .291 in 27 World Series games.

"My life is complete," he said in Roxboro, N.C., where he runs a 150-acre tobacco farm. "I always felt like this was a dark shadow. I wasn't bitter, but this was something I always wanted to happen."

Vaughan hit .385 in 1935; no National Leaguer has done better since 1930. In 14 seasons with Pittsburgh and the Brooklyn Dodgers, he averaged .318, three times leading NL shortstops in putouts and assists. He died in a boating accident in 1952, four years after his last season . . .

Pitcher Chris Green, 24, a former Alexandria Duke, left Pittsburgh's camp for alcohol reevaluation . . .

Pittsburgh will play its Class A farm, the Prince William Pirates, at 7 p.m. April 25 at Davis-Ford Park in Woodbridge. Tickets ($5 and $6) will go on sale March 15 at the stadium. There'll be an autograph session and home-run hitting contest after the gates open at 4 p.m. The A team also announced that WQRA-FM (94.3) will broadcast its road games . . .

In the Orioles' intrasquad game in Miami, Mike Boddicker and Ken Dixon yielded three runs in the first two innings as their squad lost, 3-2, to Coach Cal Ripken Sr.'s squad. Sammy Stewart and Don Aase pitched the last four innings for the losers. Mark Brown and John Hoover protected the lead for the winners . . . San Francisco Giants reliever Greg Minton went to a doctor for a sore finger. He found he has high blood pressure and is awaiting kidney and liver scans . . . Shortstop Rafael Ramirez told the Atlanta Braves he was late getting to West Palm Beach, Fla., because he lost his credit cards. They gave him more money problems: a $1,000 fine . . . Designated hitter Cliff Johnson arrived at Pompano Beach, Fla., without a glove. The Texas Rangers, unimpressed by his logic, told him to buy one. He came back with a first baseman's mitt. . . Joe Klein is expected to succeed General Manager Phil Seghi of the Cleveland Indians today.