Karim Benzema opened the scoring for the visitors before Aritz Aduriz equalised for Ernesto Valverde’s side just after the hour-mark.
Casemiro restored Real’s lead in the 68th, however, by controlling Ronaldo’s flicked header from a corner and calmly taking his time to tuck the ball into the net from close range, thanks to some careless defending.
The host Bilbao is playing against to the table topper, Real Madrid.
The Athletic Bilbao had three consecutive wins among last five matches. He participated in all attack plays, being probably the most important player on the pitch.
Midfielder Casemiro played a part in Benzema’s goal when he spotted Ronaldo breaking down the left.
Real Madrid took the lead in the 24th minute when Benzema produced a smart finish following a fast move involving Casemiro and Ronaldo and could have doubled it when Bale’s shot was parried by Athletic keeper Kepa.
Real Madrid have won four of their last six league matches, and are also through to the quarter finals of the Champions League after dispatching Napoli with an aggregate score of 6-2 in their round of 16 matchup.
“Obviously it was a very important game, but in our heads we are only thinking about winning every game not how many points in front we are”, added Marcelo.
“What the Coach said to us, we carried it out and we secured the victory”.
“We had time to prepare this week and it worked out well”. We knew it was going to be more than hard.
Following the win, Betis moved to the 13th spot with 31 points from 28 games, while Osasuna remained in the 20th spot with 11 points from 28 matches. With yesterday’s goal he has reached the number of goals of Real Madrid’s legend as Amancio Amaro.
Atletico de Madrid are unbeaten in their last seven La Liga games against Sevilla at the Vicente Calderon (W3 4D), their last defeat against them was in September 2008 (1-0).