
Basketball players are often identified by their uniform numbers, which are typically displayed on the back of their jerseys, along with their surname. These numbers are used to distinguish players from one another and help officials, other players, official scorers, and spectators identify them. While the NBA has always allowed numbers from 0 to 99, the use of digits 6 through 9 is less common than 0 through 5, as players often stick to the numbers they wore in college. In college basketball, the NCAA previously restricted players to single-digit numbers or double-digit numbers formed by combining 0, 1, 2, 3, 4, or 5, such as 10, 25, or 45. This rule was in place to facilitate non-verbal communication between referees and scorers, as referees use their fingers to signal player numbers. However, in 2023, the NCAA changed this rule, allowing players to wear any number from 0 to 99. This change has sparked varying responses, with some players embracing the opportunity for more cool numbers and others remaining indifferent.
| Characteristics | Values |
|---|---|
| Single digits allowed | 0, 1, 2, 3, 4, 5 |
| Double digits allowed | 10–15, 20–25, 30–35, 40–45, 50–55 |
| Digits not allowed | 6, 7, 8, 9 |
| Maximum number allowed | 55 |
| Rule change | Players can now wear any number from 0–99 |
| Reasoning for rule change | Teams are limited in the numbers they can hand out, and several schools have lots of retired numbers. Also, players want cooler numbers and now have more options. |
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What You'll Learn

Numbers 0-5 are fine, but higher numbers are rarely used
In basketball, the number on a player's uniform is used to identify and distinguish each player from others wearing the same or similar uniforms. While numbering was unrestricted in the sport's early decades, numbering rules in the NCAA and most amateur competitions evolved to mandate the use of numbers 0 to 5, along with their corresponding double-digit numbers (i.e., 10, 20, 30, etc.) up to 55. This rule was in place to ease non-verbal communication between referees, who use fingers to denote a player's number, and the official scorer.
The restriction on numbers higher than 5 was not a significant issue, as players could still choose from a range of numbers, and it helped simplify hand signaling for officials. However, there were some exceptions to this rule, with the NBA always allowing numbers from 0 to 99, and players like George Mikan wearing 99 in the late 1940s, and Bill Russell wearing 6 in the '60s.
In 2023, the NCAA changed this rule, allowing college basketball players to wear numbers greater than 5. This change was part of an overall loosening of uniform restrictions, giving teams more creativity in their jersey designs. Despite this, there hasn't been a rush to adopt the newly legal numbers, with many players and teams sticking to the traditional numbers 0 to 5.
While numbers 0 to 5 are still widely used and accepted, the option to choose higher numbers provides variety and allows players to pursue different numbers for various reasons, such as lucky numbers or significant dates. The use of numbers higher than 60 is still very rare, and the preference for single-digit numbers remains strong, with 7 being the most popular choice among players.
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Numbers above 5 were banned in college basketball until 2023
In college basketball, players were restricted to jersey numbers between 0 and 5 until 2023. This rule was in place to simplify non-verbal communication between referees and official scorers, as referees would use fingers to denote a player's number. The restriction on jersey numbers in college basketball was lifted in 2023, with the NCAA allowing players to wear any number from 0 to 99. This change was part of an overall loosening of uniform restrictions, giving teams more creativity in their jersey designs.
The restriction on jersey numbers in college basketball was previously a source of contention, with some arguing that it was unnecessary as referees could easily identify players with numbers above 5 when they committed fouls. The rule change in 2023 was met with a collective shrug by college players, with many teams choosing to stick to the traditional numbers. However, it did open up new possibilities for players who wanted "cool" numbers.
The NBA, in contrast, has always allowed jersey numbers from 0 to 99, although the use of numbers 6 to 9 is less common as players often keep the numbers they wore in college. The restriction on jersey numbers in the NCAA meant that players who wore numbers above 5 in the NBA, such as Kobe Bryant (8) and LeBron James (6), would not have been able to wear their iconic numbers in college.
The change in the NCAA rule regarding jersey numbers in college basketball is a significant one, allowing players more freedom in choosing their jersey numbers and bringing college basketball in line with the NBA in terms of uniform restrictions. This change is part of a broader set of rule modifications for the 2023-24 season, which include alterations to the block/charge rule, a shorter shot clock after an offensive rebound, and the allowance of religious headwear without a waiver.
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The NBA has always allowed numbers 0-99
The NBA has traditionally allowed jersey numbers from 0 to 99, with players like Damian Lillard (#0) and Russell Westbrook (#00) making these numbers iconic in recent years. However, the use of digits 6 through 9 is less common than 0 through 5 since players tend to keep their numbers from college or previous teams. For instance, when Michael Jordan retired in 1993, the Chicago Bulls retired his number 23. When he came out of retirement, he chose to wear 45 until he reverted to his iconic 23 during the 1995 NBA postseason.
While the NBA allows numbers up to 99, there are certain restrictions based on player positions. Guards usually wear #0 or #1, forwards may wear #2 through #4, and centres typically wear higher numbers like #45. Additionally, the NBA does not allow players to wear the number #69 due to its indecent connotations. Numbers in the 70s and 80s are permitted, and players have worn them in the past, such as LeBron James, who wore #6 with the Miami Heat before returning to his #23 with the Cleveland Cavaliers.
The NBA has specific guidelines for jersey numbers to ensure consistency and clarity during games. Players cannot wear numbers like 04 or 09, where zero is used alongside another digit, to avoid confusion. Traditionally, numbers 1-5 are reserved for guards or players who primarily handle the ball, such as point guards like Chris Paul (#3) or shooting guards like James Harden (#13). Numbers 6-10 are typically worn by small forwards or swingmen who can play multiple positions.
The NBA also has rules regarding jersey number changes. Players are required to seek permission from the league office and their teams before making any changes. These changes are usually expected during the offseason or a lengthy break to allow time for merchandise updates and other logistics. In certain situations, the league might allow immediate jersey number changes due to significant events or unique circumstances. For example, LeBron James received an exception to change from #6 with the Miami Heat to his former #23 upon returning to the Cleveland Cavaliers.
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Numbers 6-9 are less common in the NBA as players keep college numbers
The NBA has always allowed jersey numbers from 0 to 99. However, the use of digits 6 through 9 is less common than 0 through 5. This is because college basketball players are prohibited from wearing jerseys with numbers 6, 7, 8, or 9. This rule was only changed in 2023, and players tend to keep their college numbers when they enter the NBA.
The restriction on numbers higher than 5 in college basketball was implemented to simplify hand signaling by officials. Referees use their fingers to indicate the number of points scored in a shot attempt or to identify a player committing a foul. For numbers 1 to 5, referees can use one hand to signal, but for numbers higher than 5, they need to use two hands, which can be more difficult and time-consuming.
Despite the rule change, there hasn't been a rush by college players to adopt the newly allowed numbers. Of the 43 power conference players wearing numbers with 6, 7, 8, or 9, 39 players chose single-digit numbers, with 7 being the most popular. The least popular single-digit number was 6, with only six players choosing it.
Some players are very particular about the numbers they wear, choosing them for sentimental reasons or personal significance. For example, Kevin Durant wears 35 in honour of his youth basketball coach, Charles Craig, who passed away at 35. Metta World Peace, formerly known as Ron Artest, chose 37 because Michael Jackson's "Thriller" spent 37 weeks at the top of the Billboard charts.
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Number choice is often about identity or honouring someone
Number choice is often deeply personal to athletes. Basketball players, in particular, have been known to choose jersey numbers that hold significant meaning to them. This could be a way to honour someone they look up to, such as a family member, a former player, or a coach. For instance, Kevin Durant chose the number 35 in honour of his youth basketball coach, Charles Craig, who passed away at 35. Durant said, "It's all about doing it for somebody I love. It's not about what's the better number and what looks better on me. It's all about him."
Players might also choose a number that represents their birth date or age, like Penny Hardaway's #1 or Kevin Garnett's former #21. Some players opt for numbers that have familial or cultural importance. For instance, baseball player Bill Voiselle wore No. 96 in honour of his hometown of Ninety Six, South Carolina.
Jersey numbers can also be chosen to pay homage to a former player. For example, Shane Warne wore the number 23 when he played junior Australian rules football for St Kilda, and he continued to use the same number when he played cricket for Australia. In basketball, the number 6 has been retired across the NBA in honour of former Boston Celtics player Bill Russell, who was not only a skilled player but also an influential civil rights activist.
In some cases, players might choose a number that is significant to them for reasons unrelated to sports. For example, the player formerly known as Ron Artest chose the number 37 because Michael Jackson's "Thriller" was the top song on the Billboard charts for 37 weeks. Similarly, baseball player Benito Santiago switched from No. 9 to No. 09 so that his uniform would be more comfortable.
While some athletes carefully consider the number they will wear, others simply take whatever is available or choose a random number. For instance, Kyrie Irving said that he picked the number 2 because it was "just a random number [he] picked when [he] got drafted."
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Frequently asked questions
In the NBA, players can wear any number from 0 to 99. In college basketball, players were previously restricted to numbers 0 to 5, but as of the 2023-24 season, they can also wear any number from 0 to 99.
The restriction was in place to simplify communication between referees and scorers. Referees use hand signals to indicate a player's number, and limiting the numbers to 0 to 5 meant they only needed to use one hand.
Yes, no player can wear 00. Additionally, the use of numbers higher than 55 is very rare.
Most players tend to keep the numbers they wore in college. Numbers 0 to 5 are more common than numbers 6 to 9.
Yes, Kobe Bryant wore number 8, LeBron James wore number 6, and Dennis Rodman wore number 91.











































