Real Madrid winger Gareth Bale will miss the club's Champions League match on Tuesday at CSKA Moscow.
The Wales international suffered a muscle injury and was substituted at the start of the second half of Real's 0-0 draw with Atletico Madrid on Saturday.
"Gareth felt an issue in his abductor in the first half," Real manager Julen Lopetegui said after Saturday's match. "It made sense to take him off for precaution."
Lopetegui will also be without club captain Sergio Ramos for Tuesday's Group G match.
Other notable omissions for the defending European champions include defender Marcelo (calf) and Isco, who underwent a successful operation for acute appendicitis last week.