With their playoff spot wrapped up, their opponent decided and Game 1 another four days away, the Yankees had some fun yesterday during the final game of a grueling regular season. Joe Torre took the day off, turning the reins over to Jorge Posada, part of the manager's annual tradition in which he lets one of his veterans take charge for a day. "It means a lot," said Posada, who watched his team top the Orioles, 10-4, to finish the season 94-68. "I'm honored. A lot of guys have done this and they've done a hell of a job." "I couldn't do this every day," Posada said. "It was fun until I got here. Then they told me all the rules, the Joba Rules, the people that were active. It's a little tougher than you'd think."