Doblas was also a key element in Betis' first-ever qualification to the UEFA Champions League, as he saved a Camel Meriem penalty against AS Monaco FC in the third qualify round, a 3–2 win. During the league season errors cost him his position, regained by Contreras: his most notable mistake came against Chelsea at Stamford Bridge, when he gave Ricardo Carvalho a goal in an eventual 0–4 Champions League loss; he still managed 24 league appearances, a situation repeated (also with Contreras as backup) in the 2006–07 campaign.