Byron David Castillo Segura (born 25 June 1995) is an Ecuadorian professional footballer who plays as a right-back for Liga MX club Pachuca and the Ecuador national team.
Club career Early career Castillo began his career with Norte América, but made his debut as a senior while on loan at Deportivo Azogues. In May 2015, he was loaned to Emelec, but was released in July after having problems with his documentation.
In January 2016, Castillo moved to Aucas. He made his Serie A debut with the side on 7 February, starting in a 1–2 away loss against Fuerza Amarilla, and scored his first goal in the category late in the month, in a 1–1 home draw against Mushuc Runa. On 31 December, Aucas announced that he had extended his contract with the club for a further four seasons.
Barcelona SC On 5 January 2017, Castillo was presented at Barcelona SC. After featuring in just one match during his first season, he started to feature more regularly from the 2018 season onwards, and became a regular starter in 2020.
On 10 July 2021, Castillo signed a new contract with the club until 2025.
