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USL Championship player ID
identifier for soccer player profile on website of USL Championship, formerly known as United Soccer League (USL) and USL Pro

Description	identifier for soccer (association football) player profile at uslchampionship.com, the official website of USL Championship
Associated item	USL Championship (Q1362411)
Applicable "stated in" value	USLchampionship.com (Q100719813)
Data type	External identifier
Corresponding template	Template:USL Championship player (Q43055401)
Template parameter	|id= or |1= in en:Template:USL Championship player
Allowed values	[\pL\d\-]+
Example	Jimmy McLaughlin (Q6200801) → jimmy-mclaughlin Donovan Ricketts (Q426615) → donovan-ricketts Francisco Narbón (Q19577382) → francisco-narbón
Source	https://www.uslchampionship.com/league-players
Formatter URL	https://www.uslchampionship.com/$1
Tracking: same	Category:USL Championship player ID same as Wikidata (Q55423038)
Tracking: differences	Category:USL Championship player ID different from Wikidata (Q55423677)
Tracking: usage	Category:Pages using Wikidata property P4019 (Q30116636)
Related to country	United States of America (Q30) (See 762 others) Canada (Q16) (See 163 others)
See also	MLS player ID (P2398), USL League One player ID (P8779)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other external identifier Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Map of people by place values: place of birth educated at work location residence place of death place of burial January 1st dates People with date of birth on January 1 People with date of death on January 1 People with both dates on January 1 Mix'n'match (Report) Database reports/Constraint violations/P4019 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 2,413 Main statement 2,404 99.6% of uses Qualifier 3 0.1% of uses Reference 6 0.2% of uses
Search for values

Single value: this property generally contains a single value. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: Josué Gómez (Q27671211), Lebogang Moloto (Q19901561), Danny Barbir (Q42756011), Marcus Epps (Q29113569), Pecka (Q7158730), Kashope Oladapo (Q97670651), Temi Adesodun (Q97670695), Memo Rodríguez (Q20641399)
List of violations of this constraint: Database reports/Constraint violations/P4019#Single value, SPARQL

Distinct values: this property likely contains a value that is different from all other items. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4019#Unique value, SPARQL (every item), SPARQL (by value)

Item “instance of (P31): human (Q5)”: Items with this property should also have “instance of (P31): human (Q5)”. (Help)

List of violations of this constraint: Database reports/Constraint violations/P4019#Item P31, hourly updated report, search, SPARQL

Format “[\pL\d\-]+”: value must be formatted using this pattern (PCRE syntax). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4019#Format, SPARQL

Item “league (P118): USL Championship (Q1362411)”: Items with this property should also have “league (P118): USL Championship (Q1362411)”. (Help)

List of violations of this constraint: Database reports/Constraint violations/P4019#Item P118, hourly updated report, search, SPARQL

Item “sport (P641): association football (Q2736)”: Items with this property should also have “sport (P641): association football (Q2736)”. (Help)

List of violations of this constraint: Database reports/Constraint violations/P4019#Item P641, hourly updated report, search, SPARQL

Item “occupation (P106): association football player (Q937857)”: Items with this property should also have “occupation (P106): association football player (Q937857)”. (Help)

List of violations of this constraint: Database reports/Constraint violations/P4019#Item P106, hourly updated report, search, SPARQL

Format “^[^/]+$”: value must be formatted using this pattern (PCRE syntax). (Help)

List of violations of this constraint: Database reports/Constraint violations/P4019#Format, hourly updated report, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4019#Entity types

Scope is as main value (Q54828448), as reference (Q54828450): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4019#Scope, SPARQL

This property is being used by: en:Template:USL Championship player Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

I removed USL League One (Q30636616) and the associated formatter URL from this property, because those external links are not always interchangeable with USL Championship (Q1362411), as shown in the following examples:

• Mikey Ambrose (Q19864045)
  • Good link: https://www.uslchampionship.com/mikey-ambrose
  • Dead link: https://www.uslleagueone.com/mikey-ambrose
• Nicholas Amponsah (Q62597156)
  • Good link: https://www.uslleagueone.com/nicholas-amponsah
  • Dead link: https://www.uslchampionship.com/nicholas-amponsah

A separate property could be created for USL League One players. -- Zyxw (talk) 05:18, 21 May 2019 (UTC)[reply]