|Full name||Félix Alexander Borja Valencia|
|Date of birth||April 2, 1983|
|Place of birth||San Lorenzo, Ecuador|
|Height||1.79 m (5 ft 10 1⁄2 in)|
|2007–2008||→ Mainz 05 (loan)||32||(16)|
|2013||→ Puebla (loan)||25||(7)|
|2014||→ LDU Quito (loan)||16||(2)|
|2014||→ Chivas USA (loan)||12||(3)|
|* Senior club appearances and goals counted for the domestic league only.
† Appearances (Goals).
Due to his sub-standard performances for Olympiacos in his first season, as well as the fact that he occupies a non-EU player spot at his current team's roster, Olympiacos had the desire at the end of the 2006–07 season to sell him or loan him for the upcoming season. Due to that decision by the club, Borja was loaned out to German club FSV Mainz 05 for the 2007–08 season. At the end of the season, Mainz signed him permanently. Having limited success, especially after Mainz earned promotion to the Bundesliga, he transferred to the Mexican club Puebla F.C.  In the 2011–12 Apertaura season, he was transferred to Pachuca F.C.
He was included in the Ecuadorian national team for the 2006 FIFA World Cup, despite his relative inexperience. He played in several of the 2006 FIFA World Cup qualifying matches for the Ecuadorian national team, including the game against Uruguay which confirmed their passage to Germany 06. He made only one appearance for his country on the world's biggest stage against Germany, where they were defeated 3–0.
He featured in friendlies after the FIFA World Cup, even scoring against Brazil in an October 2006 friendly in Sweden. He was called up to the Ecuador squad for the 2007 Copa America, and started in the final group game against Brazil.
- "Félix Borja". footballdatabase.eu. Retrieved March 25, 2012.
- "Mainzer "Maskenmann" Borja wechselt nach Mexiko" [Mainz "Mask Man" transfers to Mexico] (in German). Süddeutsche Zeitung. December 9, 2010. Retrieved December 9, 2010.[dead link]