A product of Sevilla FC's youth system, Alfaro was one of Sevilla Atlético's most important players from 2005 onwards, helping them achieve promotion to Segunda División in the 2006–07 season. He had previously made his first-team debut on 30 April 2006, playing eight minutes in a 2–1 away win against Real Sociedad. Alfaro scored his first La Liga goal on 28 January 2007, as a starter in a 4–2 win at Levante UD, also appearing in four UEFA Cup games in the club's victorious campaign. However, he was nothing more than a fringe player with the main squad in his first three seasons, barred mainly by Jesús Navas, and would leave the Andalusians for 2008–09, joining CD Tenerifeon loan; during this stint, he was instrumental as the Canary Islands side returned to the top flight after a seven-year-absence by scoring a career-best 20 goals, fourth-best in the competition. After he completed the 2009 preseason with Sevilla, Alfaro was again loaned for a season to Tenerife. Like Nino, he again was the most important attacking unit of the team, which was eventually relegated again while the player contributed with seven goals. Returned to Sevilla for 2010–11, Alfaro benefitted from Navas' absence due to injury and featured in some games early into the season, scoring in a 2–1 win at Málaga CF on 19 September 2010. On 4 November, he scored twice against FC Karpaty Lviv for the season's Europa League; the following week, he also found the net in two home fixtures, against Valencia CF and Real Unión. On 8 August 2011, RCD Mallorca reached an agreement with Sevilla to buy Alfaro for five years and €700,000. He started in his first official match, a 1–0 home defeat of RCD Espanyol. On 18 August 2014, Alfaro terminated his contract with the Bermellones and joined Superleague Greece side Panathinaikos FC. The deal collapsed two days later, however, and he signed a two-year contract with Real Valladolid late in the month. On 1 July 2016, after being sparingly used during his two-year tenure due to an ankle injury, Alfaro joined Córdoba CF also of the second tier for one season. On 23 July 2019, after suffering relegation, he agreed to a two-year deal at Segunda División B's Hércules CF.
Personal life
Alfaro's two brothers were also footballers: Juan José, a midfielder, graduated in FC Barcelona's La Masia, but spent his entire career in Segunda División B or lower. ForwardJesús appeared several seasons for Sevilla B, after emerging through the club's youth ranks.