He made his senior debut with Sevilla at 16, going on to appear in 173 competitive matches for the club over seven La Liga seasons (12 goals) and win four major trophies, including two UEFA Cups.

Also at the end of the league campaign, Barcelona-based daily Sport further speculated that Real Madrid were considering Capel as a potential replacement for the recently departed Robinho,[11] but no move ever materialised.

[18] On 19 April 2012, Capel scored his seventh competitive goal of the season, helping the hosts come from behind to win 2–1 against Athletic Bilbao in the Europa League semi-finals first leg.

[29] On 4 August 2018, after more than a year without a club, Capel moved to Segunda División side Extremadura UD on a two-year contract.

[30] He was joined there by his former Sevilla teammate José Antonio Reyes, who died in a car crash in June 2019;[31] the following month, he left the team from Almendralejo having played just 382 minutes.

[36] After having helped Spain win the 2006 UEFA European Under-19 Championship,[37] Capel played in the 2007 FIFA World Cup with the under-20 team, scoring in injury time in the first game against Uruguay for the final 2–2.

[39] Capel made his debut for the senior side on 20 August 2008, playing the second half of a friendly with Denmark and setting up two goals in the 3–0 away win.