Real Madrid Defender, Marcelo has been ruled out of the Madrid derby against Atletico Madrid.
The Brazilian defender suffered a Calf injury in the 3-0 loss against Sevilla on Wednesday.
Tests by the Real Madrid medical team have confirmed the extent of the injury to his right leg and stated that his return will depend on how he progresses.
Marcelo is expected to miss the Los Blancos matches against Alaves and CSKA Moscow.
Marcelo joined Real Madrid in 2007, he has made 325 appearances for the Galacticos scoring 23 times.