Key takeaways
- The MLB draft, officially the Rule 4 Draft, assigns amateur players from high schools, colleges and other amateur clubs to teams; it began in 1965.
- High schoolers are eligible after graduating if they have not attended college; four-year college players after three years or at 21; junior college players at any time.
- It now runs 20 rounds, down from up to 40 until 2019 and up to 50 until 2011.
- Since 2023, the 18 non-playoff teams enter a lottery for the first six picks.
- Each team has a bonus pool for its first 10 rounds; overspending brings a 75% tax, then lost picks and a 100% tax at higher levels.
Baseball's draft looks very different from football's or basketball's. It is longer, drafts players straight out of high school, and lets many of them walk away to college and try again. This guide explains how it works, drawing on Wikipedia's history of the Major League Baseball draft, officially the Rule 4 Draft, also called the first-year player draft, and on MLB.com's glossary and draft coverage. The rules described are the ones in force for the 2026 draft, set by the 2022 collective bargaining agreement.
The 1964 bonus war that created the draft
Wikipedia traces the draft to a bonus war. By 1964, it notes, teams were spending more on signing bonuses for amateurs than on major league salaries, and that year the California Angels signed Rick Reichardt for a $200,000 bonus. The first draft followed on 8–9 June 1965 in New York City, and Rick Monday was its first pick. Without other teams bidding, the Kansas City Athletics signed him for $104,000, about half of Reichardt's bonus the year before.
Who can be drafted
The eligibility rules depend on where a player is:
| Player | When eligible |
|---|---|
| High school | After graduating, if he has not attended college |
| Four-year college | Three years after first enrolling, or after his 21st birthday, whichever comes first |
| Junior or community college | At any time |
A player who is drafted but does not sign can be drafted again in a later year, provided he is eligible. Wikipedia notes that high school players have extra leverage because they can choose college and re-enter the draft later. Players nobody picks become free agents and can sign with any club, until a week before the next draft or until they enrol in college.
From 50 rounds to 20
| Era | Rounds |
|---|---|
| Until 2011 | Up to 50 (1,500+ picks) |
| Until 2019 | Up to 40 (1,200+ picks) |
| 2020 | Optionally shortened to 5, under an MLB–union deal |
| Now | 20 (600+ picks), plus compensatory picks introduced in 2021 |
That size reflects baseball's long development path: Wikipedia notes that, unlike top picks in the NHL, NBA and NFL, top MLB draftees are nearly always assigned to the minor leagues for several years, levels which minor league baseball levels explained describes.
The six-pick draft lottery
Under the 2022 collective bargaining agreement, from the 2023 draft the 18 teams that missed the postseason enter a lottery for the first six picks. MLB's glossary explains the odds follow reverse winning percentage, with the three worst teams each at 16.5% for the first pick. MLB.com noted when the agreement was reached in 2022 that six lottery picks reach deeper than any other major US league: the NBA's lottery then covered four picks, the NHL's two and the NFL had none.
There are limits on repeat winners. Revenue-sharing recipients cannot receive lottery picks in three consecutive years, other clubs cannot receive them in consecutive years, and an ineligible club cannot pick higher than 10th. In 2026, MLB.com reported, 15 of the 18 non-playoff teams were eligible: the Rockies had received lottery picks in 2024 and 2025, and the Nationals and Angels were revenue-sharing payors. After the first round, non-playoff teams pick in reverse order of winning percentage. How draft lotteries work compares the systems across leagues.
Bonus pools and their penalties
MLB's glossary explains the bonus pool: each pick in the first 10 rounds has an assigned value, and the total of a club's picks is what it can spend on signing bonuses for those rounds without penalty. If a player picked in the first 10 rounds does not sign, his pick's value is removed from the pool. Overspending is penalised in steps:
| Overspend | Penalty |
|---|---|
| 0% to 5% | A 75% tax on the overage |
| Over 5% to 10% | A 75% tax and the loss of a future first-round pick |
| Over 10% to 15% | A 100% tax and the loss of a future first- and second-round pick |
| Over 15% | A 100% tax and the loss of two future first-round picks |
A worked example. With a $10 million pool, spending $10.4 million (4% over) costs a tax of 75% × $400,000 = $300,000. Spending $10.8 million (8% over) costs 75% × $800,000 = $600,000, plus a future first-round pick, a strong reason to stay within 5%.
The 2022 agreement added a protection for players: MLB.com reported that any top-300 prospect who submits to a pre-draft physical is guaranteed 75% of his assigned pick value.
Rewards for promoting prospects
The 2022 agreement also created Prospect Promotion Incentive (PPI) picks. Wikipedia explains they reward teams for promoting top prospects to the majors sooner, rather than delaying them to gain extra years of control: a qualifying rookie who wins Rookie of the Year, or finishes top three in MVP or Cy Young voting before reaching arbitration, can earn his team an extra pick.
High school or college?
Wikipedia records a long debate. Early drafts favoured high schoolers, but the statistician Bill James found college draftees outperformed them by "a laughably huge margin"; a later study by Rany Jazayerli in Baseball Prospectus concluded that very young draftees return more value than expected by their draft slots.
How the NFL draft works shows how different football's approach is. In Baseball Career Sim 2026, one of our sports career games, a career starts long before the majors; its guide explains the path, and what a quality start is one of the numbers a pitcher is judged by.
Good to know
Frequently asked questions
Who is eligible for the MLB draft?
How many rounds are in the MLB draft?
How does the MLB draft lottery work?
What happens if a drafted player does not sign?
Sources
- Major League Baseball draft (opens in a new tab)Wikipedia — accessed
- Rule 4 Draft (glossary) (opens in a new tab)MLB.com — accessed
- Odds for 2026 MLB Draft Lottery (opens in a new tab)MLB.com — accessed
- Here's how the new CBA impacts the Draft (opens in a new tab)MLB.com — accessed
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