Historical Reading: The Koh-i-noor Diamond. 1  Onlookers take in the display of the Koh-i-noor diamond with two smaller diamonds at the Great Exhibition of 1851 in the Crystal Palace in London. The Koh-i-nor was placed in a covered gilt iron cage that excluded daylight and was illuminated with a ring of gas jets and metal reflectors surrounding it.
Also called the active roster, the 25-man is composed of 25 players who are playing for their Major League team. They are the starting eight (NL) or nine (AL) position players, pitchers, and reserve players on the team. Players on the active roster are also on the 40-man roster.
Each Major League Baseball team maintains both a 25-man roster and a 40-man roster of players. Players on the 25-man roster are eligible to play in official major league games throughout the season. Once a player has been placed on a team's 40-man roster, a team has 3 option years on that player. 2  A player is considered to have used one of those three option years when he spends at least 20 days in the minors in any of those 3 seasons.