Arizona Fall League
The Arizona Fall League (AFL) is a developmental league operated by MLB.
The AFL operates for six weeks after the conclusion of the MLB regular season, and it features a 32-game "regular season" schedule plus an All-Star Game (known as the "Rising Stars Game") at the end of the 4th week and the AFL Championship Game (pitting the winner of the East Division versus the winner of the West Division) at the end of the 6th and final week.
There are three games scheduled every day Monday through Saturday during the AFL regular season (there are no games on Sunday), beginning with Opening Day on the second Tuesday following the conclusion of the MLB regular season and extending up through the Thursday of the 6th week. (No regular season games are scheduled the day of the Rising Stars game).
AFL eligibility rules & restrictions:
1. There are six AFL teams, and each AFL team is affilated with five MLB clubs. SD/SEA (Peoria Javelinas), KC/TEX (Surprise Saguaros), LAD/CHW (Glendale Desert Dogs), AZ/COL (Salt River Rafters), CUBS (Mesa Solar Sox), and SF (Scottsdale Scorpiions) are the permanent "host organizations" for the six AFL teams, but the affiliations of the other 20 MLB clubs can vary from year-to-year. Besides the Cubs, the other four MLB organizations affiliated with the Mesa Solar Sox in 2013 will be DET, LAA, OAK, and WAS.
2. Each MLB organization must assign a minimum of seven players to its AFL affiliate, including a minimum of four pitchers (preferably one pitcher capable of starting plus three relievers) and a minimum of three position players (specific positions needed to be filled by each organization TBD by a conference call "position draft" between the Player Development Directors of the five MLB organizations affiliated with that particular AFL team).
3. An MLB organization can assign additional pitchers and/or players to its AFL team's "Taxi Squad" (players assigned to an AFL team's "Taxi Squad" can be activated on Wednesdays and Saturdays only, but a player can be transferred from the Taxi Squad to the 35-man Active Roster to replace an injured player).
4. A player can be selected to play in the AFL more than once, as long as the player continues to meet eligibility for selection.
5. MLB players (including Rule 5 players) with less than one year (1+000) MLB Service Time accrued (not including time spent on a Disabled list) as of September 1st are eligible.
6. Any player on a AA or AAA roster on August 15th is eligible.
7. Two players on an organization's Advanced Class-A (A+) affilate's roster on August 15th can be assigned to the AFL..
8. Two additional players who were on the roster of a minor league affiliate below AA (A+, A, SS-A, R) on August 15th can be assigned to the AFL.
9. Internatiional players from the Dominican Republic, Venezuela, Mexico, Puerto Rico, and/or Australia are eligible only if the player is not on the reserve list of a Winter League club from the player's home country. Otherwise, there is no maximum limit on the number of international players an MLB organization can assign to its AFL team.
10. Players assigned to the AFL do not accrue MLB or minor league service time, each player receives the same salary, and the salaries are paid out of a special fund managed by MLB.
Each MLB organization provides either the manager, the pitching coach, the hitting coach, or one of the two athletic trainers to its affiliated AFL club (assignments rotate every year).