
Basketball is famous for its iconic jerseys and unique numbers, from Michael Jordan's #23 to Kobe Bryant's #8 and #24. But how are these jersey numbers chosen? In this answer, we will explore the NBA jersey number rules, positions associated with specific numbers, and the cultural significance behind basketball jerseys and their numbers. Basketball leagues at all levels in the U.S. traditionally use single and double digits between 0 and 5. The NCAA and most amateur competitions mandate the use of these numbers to ease non-verbal communication between referees and official scorers. The NBA has always allowed numbers between 0 and 99, but the use of digits 6 through 9 is less common as players tend to keep their numbers from college. Jersey numbers are often chosen based on personal significance, team traditions, or the player's position.
| Characteristics | Values |
|---|---|
| Number range in basketball | Traditionally, single and double digits between 0 and 5. However, the NBA allows numbers between 0 and 99. FIBA rules allow numbers from 1 to 99, 0, and 00. |
| Number significance | Personal significance, tribute, birth date, age, cultural importance, team traditions, player's position. |
| Prestigious numbers | Numbers like 1 and 17 are considered prestigious and are often assigned to team captains. |
| Rookie numbers | Rookies are often given high numbers during spring training, which they can switch out of when they make the team. |
| College basketball | The NCAA previously mandated the use of only single and double digits between 0 and 5. Starting in the 2023-24 season, the NCAA allowed all numbers from 0 to 99. |
| FIBA competitions | Players can choose any number between 4 and 15, excluding 6, which is reserved for team captains. |
| Placeholders | Very big numbers like 88 are used as placeholders for new players until they get a formal squad number. |
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What You'll Learn

Numbers 0-5 are common in basketball
Basketball leagues in the US have traditionally used single and double-digit numbers between 0 and 5. The NCAA and most amateur competitions mandate the use of these numbers because it makes non-verbal communication between referees and scorers easier. Referees use their fingers to denote a player's number, and it is easier to signal a single-digit number. In college basketball, single-digit players' numbers are officially recorded as having a leading zero.
The NBA has always allowed numbers between 0 and 99, but the use of 0-5 is more common than 6-9 since players tend to keep their numbers from college. The NBA also previously had a rule about "0" and "00", which no longer applies. In 2000, Utah Jazz center Greg Ostertag changed from "00" to "39" so Olden Polynice could wear No. 0. Similarly, in 2003, Washington Wizards center Brendan Haywood switched from No. 00 to No. 33 so Gilbert Arenas could wear No. 0.
In Europe, different countries, teams, and leagues have their own unique practices when it comes to jersey numbers. In Italy's Serie A, guards typically wear lower numbers (such as #1 or #5), while forwards and centers may wear higher digits (#7 or #15).
Players may choose a number that represents their birth date or age (like Penny Hardaway's #1 or Kevin Garnett's former #21). Alternatively, a player may choose a number as a tribute to a family member or mentor who influenced them, such as LeBron James, who initially wore #23 as a tribute to his childhood idol, Michael Jordan.
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Players can request a number change
In the NBA, players can change their jersey numbers during the off-season, but they must first seek permission from the league office and their respective teams. The NBA has to approve any request for a certain jersey number, and there are only a few rules about what numbers can be worn. Players can wear any number between 0 and 99, as well as 00, but the number 69 is forbidden due to its offensive connotations.
Jersey numbers in basketball can have various personal meanings attached to them. Sometimes, players choose a number representing their birth date or age, or it could be a tribute to a family member or mentor. For example, LeBron James initially wore #23 as a tribute to his childhood idol, Michael Jordan, but later changed it to #6 when he joined the Miami Heat as that was his Olympic number.
Players may also request a number change if their jersey number is retired by a previous player. In this case, the player must write to the retired player and request use of the number. This is less likely to be approved if the player has only recently retired.
In college basketball, players are prohibited from wearing the numbers 6, 7, 8, or 9 by Rule 1, Section 22, Article 7, Clause b.2. However, starting in the 2023-24 season, the NCAA has returned to allowing all numbers from 0 to 99 in both men's and women's basketball.
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Numbers can be assigned based on position
Basketball jersey numbers are often chosen based on personal significance, team traditions, or the player's position. In the NBA, jersey numbers can be any number between 0 and 99, but the use of digits 6 through 9 is less common than 0 through 5, as players tend to keep their numbers from college.
In college basketball, the National Collegiate Athletic Association (NCAA) mandates that jerseys must be numbered from 0 to 5 using Arabic numerals (1, 2, 3, etc.) or Roman numerals (I, II, III). There are certain restrictions based on positions: guards usually wear #0 or #1; forwards may wear #2 through #4; and centres typically wear higher numbers like #45. Centres in Spain's ACB League also follow this convention of wearing single-digit numbers.
The five main basketball positions, each with a unique role and set of skills, are:
- Point guard (PG) or #1: The point guard runs the offense and is usually the team's best dribbler and passer. They are sometimes known as the "playmaker" or "coach on the floor".
- Shooting guard (SG) or #2: The shooting guard's primary responsibility is to shoot the ball and score. They need to be good at seeking out open spaces and breaking through the opponent's defence line.
- Small forward (SF) or #3: The small forward should be an all-rounder, able to adapt their game and do a bit of everything. They need to be steady with the ball, able to pass accurately, and score from long and short ranges.
- Power forward (PF) or #4: The power forward's role is similar to the centre, playing near the basket, rebounding, and defending taller players. They also take longer shots than centres.
- Center (C) or #5: The centre is the tallest player on the team, playing near the basket. They need to be quick, agile, and strong to grab critical rebounds and block opponents. Centres also need to be able to score from close shots and post up.
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Numbers can hold personal significance
Basketball players often choose jersey numbers that hold personal significance. For example, some players are inspired by a particular athlete and their achievements and may choose to wear that athlete's number as an homage. A player might also choose a number that represents a significant date or a favourite number. The number might also symbolise something meaningful, such as determination, strength, or success. In ancient Greece, the numbers #11, #22, and #33 were revered as master numbers that command extra strength.
Numbers can also hold cultural significance. Yao Ming, for example, chose the number 1 for his jersey, as the number is considered lucky in China due to its association with prosperity. Conversely, the number 4 is considered unlucky in China due to its resemblance to the word for "death". In some countries, players are given very high numbers as rookies, such as Don Drysdale's number 53, and they may switch to a lower number when they make the team.
Players may also choose a number that is already being worn by another player, or that is considered prestigious, such as the number 1, which is traditionally assigned to the team captain in some clubs. In college basketball, single-digit players' numbers are officially recorded as having a leading zero, and players may choose a number that is popular among their peers, such as the number 0, which is gaining in popularity.
Numbers can also hold personal significance due to their association with a particular player's style or achievements. For example, the number 6 has been retired across the NBA in honour of former Boston Celtics player Bill Russell, an influential civil rights activist, and players may choose to retire their own jerseys in a similar way.
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Numbers 6-9 are less common in the NBA
In the NBA, players can wear any number between 0 and 99, including 00. However, numbers 6 through 9 are less common than numbers 0 through 5. This is because players often want to keep the same number they had when they played college basketball, and in college basketball, numbers 6 through 9 are prohibited by NCAA rules. This rule has been in place since at least 2015, and it applies to both the ones and tens places of jersey numbers. For example, a college basketball player could not wear the number 16 or 61 on their jersey.
The reasoning behind this rule is that it makes it easier for non-verbal communication to take place between referees and official scorers. Referees use their fingers to indicate the number of a player who has committed a foul, and having to use six fingers would cause confusion.
In the NBA, there is no league-wide retired number, and players can wear any number they want. However, the NBA will not allow players to wear the number 69 due to its offensive sexual connotations.
Players in the NBA often keep the same number they had in college, but they can change their number when they join a new team or during the off-season.
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Frequently asked questions
In the NBA, players can wear any number between 0 and 99. However, the use of digits 6 through 9 is less common than 0 through 5, as players tend to keep their college numbers, and the NCAA mandates the use of single and double digits between 0 and 5.
Jersey numbers are often chosen based on personal significance, team traditions, or the player's position. Some players opt for numbers that have familial or cultural importance, while others simply adhere to team or league guidelines.
Yes, in FIBA competitions, numbers 4 to 15 are typically available for players to choose from, with number 6 being reserved for team captains. In the NBA, the five positions are known by a unique name and number: point guard (PG) or 1, shooting guard (SG) or 2, small forward (SF) or 3, power forward (PF) or 4, and center (C) or 5.
Yes, it is common for players to change numbers within a club as their career progresses. For example, a player may switch to a lower number when they make the team or change to a different number when they relinquish the captaincy.











































