Tesillo has represented his national team at International Friendlies and World Cup Qualification. Kraft Kolumbien Sports Management is the agent of William Management. He had a loan contract at Junior with whom he won the 2015 Copa Colombia.
William Tesillo was born on February 2, 1990, in Barranquilla, Colombia. Tesillo holds a Colombian nationality.
Tesillo's current market value is estimated at £1.22million as of March 7, 2018. His current yearly salary is estimated around $400,000 as of 2018 with the weekly wage around €5K.
He is currently living a lavish life. However, his net worth of 2018 is not revealed yet.
William Tesillo began his career as a member of the Boca Juniors de Cali. In 2009, he was transferred to Centauros Villavicencio and made his debut during the year.
He scored his first goal on March 21, 2009, in a 1-3 loss to Atletico. Before leaving the club, he scored 1 goal in 30 appearances.
Tesillo moved to Categoria Primera A side Deportes Quindio on January 1, 2010, and made his debut on April 4 in a 0-1 loss against Boyaca Chico. He scored his first goal for the club on May 8, 2011, against Deportivo Perera. For the club, he scored 3 goals in 108 appearances.
William Tesillo was sent on loan to Junior on January 1, 2014, for the 2014-015 season and made his official debut for the club replacing, Luis Enrique Quinones against Atletico Huila. Before ending his loan-season, he played 83 games.
Tesillo was signed by Santa Fe on a free transfer with a three-year contract on January 1, 2016. His first match came on January 31 playing the full 90 minute.
He scored his first goal in a 1-2 loss against Envigado on February 21, 2016. He has so far scored 4 goals in 36 appearances.
In 2016, Tesillo made his international debut with the Colombia Olympic with whom he played 6 matches. He was a member of the 18-man squad ahead of the 2016 Summer Olympics.
On January 26, 2017, Tesillo earned his first senior cap under the coach Jose Nestor Pekerman in a friendly 0-1 loss to Brazil. He has been capped 3 times for his national team.
William Tesillo got married to his beloved wife, Daniela Mejia after dating for a couple of years. The couple is blessed with two children together named, Maria Jose born on August 9, 2006, and Emmanuel born on December 25, 2015
His wife is the constant support of the Barranquilla player. The couple currently lives a blissful life in Bogota with their two children.