- 17 years, 3 months, 23 days
- Malaga vs Real Zaragoza (2010/11)
After making five appearances in 2009/10 and scoring in the Copa del Rey, teenager Juanmi earned more regular minutes with Malaga the following season and netted his first league goal on Matchday 2 against Zaragoza. Better still, his second came just 20 minutes later in a 5-3 win.
The Malaga native signed for Real Betis this summer after a successful three-year stint at Real Sociedad. We’ll quietly ignore his less-heralded 2015/16 at Southampton.
7. Alberto Rivera
- 17 years, 3 months, 22 days
- Real Madrid vs Celta Vigo (1994/95)
Rivera’s short Real Madrid career could hardly have started better. He made his debut in the same season as Raul and scored against Celta as a substitute in Los Blancos’ 2-0 win, towards the end of Real Madrid’s title-winning 1994/95 season.
He never quite made it at Madrid but racked up almost 300 La Liga appearances elsewhere, representing Numancia, Levante, Real Betis, Sporting Gijon and Elche.