Vadillo playing with Betis in 2012
|Full name||Álvaro Vadillo Cifuentes|
|Date of birth||12 September 1994|
|Place of birth||Puerto Real, Spain|
|Height||1.80 m (5 ft 11 in)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 3 December 2017.
Vadillo was born in Puerto Real, Province of Cádiz, and joined Real Betis' youth system at the age of 12. On 28 August 2011, he became the second youngest ever player to appear in a La Liga game, as he started in a 1–0 away win against Granada CF at the age of 16 years, 11 months and 16 days. The previous season, he contributed with 14 matches (one goal) as the B-team narrowly avoided relegation from Segunda División B.
On 15 October 2011, Vadillo collided with Sergio Ramos in the early minutes of an eventual 1–4 loss at Real Madrid, being stretchered off and sidelined for several months with a torn cruciate ligament. On 1 August 2014 he suffered the same injury, being sidelined for six months.
- Rubén Castro hace justicia (Rubén Castro does justice); El País, 27 August 2011 (in Spanish)
- Vadillo, de cinco a seis meses de baja confirmados (Vadillo, five to six confirmed months out); El Mundo, 20 October 2011 (in Spanish)
- Vadillo, siete meses de baja: “La lesión es parecida a la del Bernabéu” (Vadillo, seven months out: "The injury is similar to the one at the Benabéu"); ABC, 1 August 2014 (in Spanish)
- Álvaro Vadillo se incorpora a la SD Huesca (Álvaro Vadillo added to SD Huesca); SD Huesca, 18 August 2016 (in Spanish)