How many players are they in baseball?

Answer 1

The question is vague and there are multiple answers:

a) There are 9 players in the field, and 9 in the batting lineup. The 9 in the batting lineup will be exactly the same as the 9 in the field unless the team uses a Designated Hitter (DH). The DH bats for any of the nine fielding positions. It is usually the pitcher removed from the batting line-up when the DH rule is in place. In American Major League Baseball, the DH rule is in use in the American League and during the All Star Game / World Series when those games are in American League ballparks.

b) In American Major League Baseball, all teams are allowed 40 players on the roster until the first regular season game. The roster limit is then 25 players until August 31st. After September 1st, a team may increase their roster back to 40 players. The increased player roster during the pre-season allows teams to determine what players they want for the regular season. The increased roster at the end of the season allows farm team players to gain experience playing in the Majors. Should a team qualify for post season play, the roster returns to 25 players and those players must have been on the roster prior to August 31st.