Real Betis coach Rubi insists they can rattle Real Madrid on Sunday night.
Rubi believes that Betis can upset the leaders if they execute their game plan to perfection.
"You know Real Madrid, Barcelona, Atletico... They're very strong teams, but we can't approach them with too much respect," Rubi said in Friday's pre-match press conference.
"You can win a match by doing things very well.
"But you are going to see a Betis [team] that are going to cause a lot of problems for Real Madrid."