PHILADELPHIA -- Miami Marlins manager Don Mattingly said Sunday that Major League Baseball should consider limiting roster sizes in the final month of the season, because "the game you play for five months is not the game you play in September."
Mattingly said expanded rosters change the fundamental nature of games in the final month of the regular season, and suggested that MLB require clubs to name 25 active players for each game while relegating inactive players to a designated "taxi squad." Under the current rules, rosters can increase from 25 to 40 players in September, and teams have no limit on the number of players used.