|Full name||William Sunsing Hidalgo|
|Date of birth||May 12, 1977|
|Place of birth||Heredia, Costa Rica|
|Height||1.75 m (5 ft 9 in)|
|2000–2001||New England Revolution||48||(4)|
|2005||→ Teplice (loan)||8||(0)|
|2006||→ Akratitos (loan)||9||(0)|
|* Senior club appearances and goals counted for the domestic league only.
The dreadlocked Sunsing made his professional debut for played for Herediano on 5 April 1995 against San Carlos and scored his first goal on 5 March 1997 for Ramonense against Saprissa. A much-travelled winger, he played abroad for New England Revolution in the United States, FK Teplice in the Czech Republic and Akratitos in Greece where he played alongside compatriots Froylán Ledezma and Berny Peña. He also played for Deportivo Saprissa, Santa Bárbara and Pérez Zeledón in Costa Rica. He was nicknamed The Menace during his trip through Major League Soccer.
He joined Limón in December 2010, but left them in summer 2011 after falling out with manager Ronald Mora. He later left Orión in September 2011 due to financial problems at the club which allowed him to move abroad to play in Guatemala for Cobán Imperial. His final club was Guatemala second division outfit Sayaxché after Xelajú were unable to lure him away from Cobán.
Sunsing made his debut for Costa Rica in a January 2000 friendly match against Trinidad & Tobago and earned a total of 35 caps, scoring 4 goals. He represented his country in 18 FIFA World Cup qualification matches and was a non-playing squad member at the 2002 FIFA World Cup and the 2001 Copa América. He scored the only goal in the only ever match the Ticos won over Jamaica, in 2001.
Sunsing is married to Ivannia Quesada and has a daughter, Keylin.
- Goleador del campeonato El resurgir del nuevo Sunsing - Nación (Spanish)
- Sunsing a la MLS•Ayer viajó para incorporarse al New England Revolution - Nación (Spanish)
- Delantero William Sunsing jugará en el Teplice del futbol checo - Nación (Spanish)
- Akratitos Tres ticos al penúltimo de futbol griego - Nación (Spanish)
- William Sunsing jugará el Clausura con Saprissa - Nación (Spanish)
- Brujas vende a William Sunsing por tres temporadas a Liberia - Nación (Spanish)
- William Sunsing jugará con Limón -Nación (Spanish)
- Sunsing quedó fuera de Limón - Nación (Spanish)
- Salida de jugadores ‘Orión no tiene crisis financiera’ - Nación (Spanish)
- Sunsing viajará rumbo a Guatemala para integrarse al Cobán Imperial - Everardo Herrera (Spanish)
- AUSENCIA DE SERIEDAD EN LOS DIRECTIVOS DE XELAJÚ MC - Ligas de Guate (Spanish)
- Un adiós con mucho sentimiento - Al Día (Spanish)
- Sunsing dice adiós esta noche - UNAFUT (Spanish)
- Appearances for Costa Rica National Team - RSSSF
- William Sunsing – FIFA competition record
- Copa América 2001 - RSSSF
- Solitario gol de William Sunsing a Jamaica hizo historia hace 12 años - Nación (Spanish)
- CONCACAF Championship, Gold Cup 2000 - Full Details - RSSSF
- CONCACAF Championship, Gold Cup 2002 - Full Details - RSSSF
- A Sunsing lo ficharon dos mujeres - Al Día (Spanish)