Óscar Alexander Whalley Guardado (born 29 March 1994) is a Spanish professional footballer who plays as a goalkeeper for Liga MX club Guadalajara.

On 31 May 2014, as first choice Leo Franco declared his desire to leave the country and understudy Pablo Alcolea was injured, he played his first match as a professional, starting in a 1–1 home draw against Sporting de Gijón in the Segunda División.

[3] The following campaign, Whalley appeared in 19 games as Zaragoza came sixth,[4] and a further one on 11 June 2015 as they lost their play-off semi-final first leg 3–0 at home to Girona.

[5] He was subsequently dropped for Bono for the rest of the tournament, as the team won the tie on away goals and lost the final by the same rule to Las Palmas.

[7] On 8 August of the following year he signed with La Liga club Sporting Gijón, as third choice behind Iván Cuéllar and Diego Mariño.