- Brazil midfielder Kaka sent off in Real Madrid's 0-0 draw with bottom Spanish club Osasuna
- Former AC Milan star booked twice inside of 20 minutes after coming on in second half
- Jose Mourinho's Los Blancos could end the weekend 18 points behind leaders Barcelona
- In Italy's Serie A, Inter Milan move up to third place with 2-0 victory at home to Pescara
Real Madrid's Spanish title defense lurched to a new low on Saturday, as Kaka was sent off in a 0-0 draw at bottom club Osasuna.
The result means Jose Mourinho's third-placed team could fall 18 points behind Barcelona if the La Liga leaders win at Malaga on Sunday, while city rivals Atletico Madrid can move seven clear of Real by beating Zaragoza.
With top scorer Cristiano Ronaldo ending a run of 60 consecutive league appearances due to suspension, Real looked woefully short of attacking ideas despite the return of striker Gonzalo Higuain.
Kaka came on for winger Angel Di Maria just before an hour was played, but the 2007 world player of the year was booked twice within 18 minutes to leave his side a man short.
The Brazilian's first yellow card came for jumping with an arm raised and the second was for stopping the home players taking a quick free-kick, resulting in his first red for Real since signing from AC Milan for a reported $100 million in 2009.
Mourinho also brought on striker Karim Benzema and Mesut Ozil for Higuain and Luka Modric, but Real's best chance was ruled out for offside.