The goalkeeper produced some fine saves to deny Bale and Di Maria, while he looked comfortable coming off his line from crosses.
The French defender was magnificent in defence and his fantastic interception to deny Ronaldo in the opening minutes was the first of many.
He had a large part to play in the second goal as his powerful header was parried by Lopez before Riera scored the rebound. His pressing helped to restrict Real Madrid's chances.
He was fortunate not to concede a penalty after tripping Modric in the box. However, looked assured at the back and produced a number of vital clearances.
An impressive performance from the right-back who frequently got forward and his sublime outside-of-the-foot cross set up the first of Riera's headers.
Offered brilliant protection to the back four and broke up a number of attacks.
He was a constant menace to the defence with his ability to find space and create openings for his team-mates. However, missed a glorious chance to restore the two-goal cushion.
The Chilean midfielder received a late red card after a reckless challenge on Ronaldo and it proved costly as Real Madrid equalised moments later.
Combined neatly with Bertran down the right and put a number of good crosses into the box. Offered good support to the defence.
His set-pieces caused Real Madrid problems all game and he was constantly looking to get on to the ball to create opportunities for his team-mates.
A brilliant performance from the former Barcelona striker whose physical presence made him Osasuna's best performer. He scored two powerful headers to take his league tally to seven.
Looked uncharacteristically shaky when dealing with crosses although has every right to be upset with his defence after being given little support for both goals.
His positioning can be questioned on both of Osasuna's first-half goals as he appeared too static and unaware of Riera's presence. However, somewhat atoned for that by equalising with a good header late on.
The Brazilian was exposed on a number of occasions and he often proved wasteful when going forward.
The youngster looked solid in defence and was rarely beaten one-on-one. He got forward at will but failed to pick out team-mates with his crosses.
Earned his 18th career red card after a needless raised arm on Riera when Real Madrid were 2-0 down. As captain, he let the side down and his ill-discipline could cost them dearly in the title race.
Was unfortunate not to be awarded a penalty but that is no excuse for his lacklustre display in the centre of midfield.
Once again demonstrated his brilliant range of passing and showed his versatility when impressing in a central defensive role following Ramos' dismissal.
He continues his impressive start at Real Madrid after another dazzling performance. Looked dangerous, showing composure and some neat touches. Pulled a goal back with a brilliant low drive and set up the equaliser.
An anonymous performance from the Welshman who struggled to get into the game. Had one shot well saved by Andres before he was substituted early in the second half.
A bit of an off-day for Ronaldo who struggled to find his shooting boots. Provided the assist for Isco's opener and created a number of chances but often failed to hit the target.
Occupied a deeper role than normal and set up some promising opportunities for his team-mates. However, hardly touched the ball in the second half and did not test Andres, which will concern Ancelotti.