I count 11 that are 40+ at the start of the season and 1 that will turn 40 during the season ...
1) Tim Wakefield, Red Sox - born August 2, 1966.
2) Omar Vizquel, White Sox - born April 24, 1967.
3) Matt Stairs, Nationals - born February 27, 1968.
4) Arthur Lee Rhodes, Rangers - born October 24, 1969.
5) Mariano Rivera, Yankees - born November 29, 1969.
6) Takashi Saito, Brewers - born February 14, 1970.
7) Craig Counsell, Brewers - born August 21, 1970.
8) Jim Thome, Twins - born August 27, 1970.
9) Darren Oliver, Rangers - born October 6, 1970.
10) Jason Giambi, Rockies - born January 8, 1971.
11) Miguel Batista, Cardinals - born February 19, 1971.
12) Henry Blanco, Diamondbacks - born August 29, 1971 (will turn 40 during the season).
25 players are active during the season.
There are 32 players in the 2011 season.
During the regular season, there can only be 12 active players. so 36 players. However, there can be more, just not all of them will be active.
An NFL team can have 53 players on an active roaster but only 46 can dress on game day.
There are fourteen players on the Chicago Bulls for the 2011-2012 season.
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According to espn.com, LSU has 36 players on NFL rosters at the start of the 2007 season.
The Giants will begin the 2011 season with 25 players. There will be various trades, roster expansions and minor-league player movements throughout the season.
The maximum there can be is 450 players, as there are 30 teams in all and each can have 15 active players on the roster. The total number changes weekly (players are signed, cut, etc.).
Totally 9 active players from a team will be allowed.
In Major League Baseball, teams may expand their active rosters to 40 players on Sept. 1, this includes for the playoffs as well. In the playoffs however you can only have 25 active players, the reason 40 players are on your roster is because unlike in the regular season you cannot move players to/from your minor league teams during the playoffs.
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