How many baseball players have hit a home run in their first at bat?
As of the 2008 season, 97 players have hit a home run in their first MLB at bat. Click on the 'Players with a Home Run in Their First At Bat' link below to see a list of those players.
Baseball players were wearing metal cleats at least as early as the Civil War, before the National League was even formed. There were many local baseball clubs, especially in the Northeast, but few organized leagues, and even fewer baseball documents survive from those times. It is unknown who first wore metal cleats.
There are 30 Major League Baseball teams. Each has 25 players, so there are 750 players in the Major Leagues. From September 1 through the end of the regular season (usually the first Sunday in October) teams can expand their roster to 40 players, so during that period there can be 1,200 Major League Baseball players. Teams also have 10 players on their A, AA and AAA minor league affiliates