10 13 - 9 on defense, 3 on each of the three bases, and the batter.
9
There must be a minimum and maximum of 9 players on the field for the defensive team which will include their current Pitcher on the mound however the offensive team can have a minimum of 1 player on the field and a maximum of 4 players on the field.
Each team has an active roster of 25 players.
The active roster of a major league team may contain a maximum of 25 players. There are 30 teams in MLB. That would make a maximum of 750 players on major league rosters at any one time during a season.
10 - 9 fielders and the batter.
25 players are active during the season.
There are 53 players on an NFL roster, of which 45 can be dressed and active for a game. Each team may have a maximum of 11 players on the playing field for any play during the game.
From September 1 to the end of the season, teams can carry up to 40 players.
In MLB the minimum and maximum number of players on the field is 9. In each half inning their are 3 outs, so there are 6 outs per inning, three per team.
0. The middle of the inning is a part of the inning. There technically doesn't have to be any players on the field at that point.
Major League baseball teams are allowed a roster of 40 players with 25 allowed to be active during the regular season until September when the active roster can be expanded up to the 40 player limit. Only nine players may be in the lineup and any one time during a game.
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.