At first, it seemed a poor match. The Marlins were a low-budget team clearing salary by trading veterans such as Preston Wilson and Charles Johnson. Plus, they had a young pitching staff in need of a mentor, and the word on Ivan Rodriguez was he didn’t do pitching. But he proved a bargain in both categories. The Marlins’ postseason revenue will go a long way toward paying Rodriguez’s salary, and the pitching staff, once skeptical, now says his presence had much to do with its success as well.