Baseball is a bat-and-ball game played between two opposing teams, of nine players each, that take turns batting and fielding. The game proceeds when a player on the fielding team, called the pitcher, throws a ball which a player on the batting team tries to hit with a bat. The objective of the offensive team (batting team) is to hit the ball into the field of play, allowing its players to run the bases, having them advance counter-clockwise around four bases to score what are called "runs". The objective of the defensive team (fielding team) is to prevent batters from becoming runners, and to prevent runners' advance around the bases. A run is scored when a runner legally advances around the bases in order and touches home plate (the place where the player started as a batter). The team that scores the most runs by the end of the game is the winner.

The first objective of the batting team is to have a player reach first base safely. A player on the batting team who reaches first base without being called "out" can attempt to advance to subsequent bases as a runner, either immediately or during teammates' turns batting. The fielding team tries to prevent runs by getting batters or runners "out", which forces them out of the field of play. Both the pitcher and fielders have methods of getting the batting team's players out. The opposing teams switch back and forth between batting and fielding; the batting team's turn to bat is over once the fielding team records three outs. One turn batting for each team constitutes an inning. A game is usually composed of nine innings, and the team with the greater number of runs at the end of the game wins. If scores are tied at the end of nine innings, extra innings are usually played. Baseball has no game clock, although most games end in the ninth inning.

Baseball evolved from older bat-and-ball games already being played in England by the mid-18th century. This game was brought by immigrants to North America, where the modern version developed. By the late 19th century, baseball was widely recognized as the national sport of the United States. Baseball is popular in North America and parts of Central and South America, the Caribbean, and East Asia, particularly in Japan, South Korea, and Taiwan.

In the United States and Canada, professional Major League Baseball (MLB) teams are divided into the National League (NL) and American League (AL), each with three divisions: East, West, and Central. The MLB champion is determined by playoffs that culminate in the World Series. The top level of play is similarly split in Japan between the Central and Pacific Leagues and in Cuba between the West League and East League. The World Baseball Classic, organized by the World Baseball Softball Confederation, is the major international competition of the sport and attracts the top national teams from around the world. (Full article...)

In total, 28 players have reached the 3,000 hit club in MLB history. Of these, 14 were right-handed batters, 12 were left-handed, and 2 were switch hitters, meaning they could bat from either side of the plate. Ten of these players (and the only active member of the 3,000 hit club) have played for only one major league team. The Cleveland Indians are the only franchise to see three players reach the milestone while on their roster: Lajoie (while the franchise was known as the "Naps"), Tris Speaker, and Eddie Murray. Four players—Hank Aaron, Willie Mays, Murray, and Rafael Palmeiro—are also members of the 500 home run club. Cobb holds the highest career batting average, .366, of the club while Cal Ripken, Jr. holds the lowest at .276. Jeter and Wade Boggs are the only players to hit a home run for their 3,000th hit and Paul Molitor is the only player to hit a triple for his 3,000th; all others hit a double or single. Craig Biggio was thrown out at second base attempting to stretch his 3,000th hit, a single, into a double. Biggio and Jeter are the only players to join the club in a game where they had five hits; Jeter reached base safely in all of his at bats. Baseball writer Josh Pahigian wrote that the club has been "long considered the greatest measure of superior bat handling." Reaching 3,000 hits is often described as a guarantee of eventual entry into the Baseball Hall of Fame. All eligible club members, with the exception of Palmeiro, have been elected to the Hall, and since 1962 all have been elected on the first ballot. Eligibility requires that a player has "been retired five seasons" or deceased for at least six months, disqualifying two living players (Biggio and Jeter). Additionally, Rose was declared permanently ineligible for his role in gambling on baseball games.

• ... that after future all-star Phil Nevin was taken first overall in the 1992 Major League Baseball Draft, Houston Astros' scout Hal Newhouser quit, protesting that the club should have taken Derek Jeter instead?
• ... that 21-year-old Danny Duffy's abrupt retirement from the Kansas City Royals organization in 2010 reminded many of when Zack Greinke left the baseball club in 2006?
• ... that Rudy Árias was a replacement player during the 1994–95 Major League Baseball strike, though he retired as a player in 1979?
• ... that Koji Mitsui was unsuccessfully posted to Major League Baseball twice in one offseason?
• ... that baseball executives thought that Toe Nash was a hoax, similar to Sidd Finch?