Henry Aaron, baseball's all-time home run leader, says he is among five people being considered to succeed Bowie Kuhn as commissioner of baseball.

Aaron, now director of player development for the National League's Atlanta Braves, said he met earlier this week in Chicago with baseball club owners Bud Selig and John Galbreath, who were representing the committee searching for a replacement for Kuhn.

"I'm still one of the five candidates. Two or three months ago I was one of the 100. So at least I'm still there," Aaron said. He did not name the top candidates for the post . . .

Seattle Mariners owner George Argyros did not deny a report he may fire the club's president and general manager, Dan O'Brien, and replace O'Brien with Dick Wagner . . .

Sunday is the postmark deadline for acceptance of Orioles reserved seat World Series orders (all games on weeknights) in Memorial Stadium; $25 per game, fans may order up to four tickets to either Games 1 and 7 (Oct. 11 and 19), or Games 2 and 6 (Oct. 12 and 18).

Applications must be in the specified two-game blocks and not for single games or all games. Send a certified check or money order, payable to the Baltimore Orioles, for the cost of tickets plus $3 for handling ($3 plus $50, $100, $150 or $200); indicate games preferred. Address to: Baltimore Orioles, P.O. Box 2473, Baltimore 21203.