Real Madrid coach Jose Mourinho has received some disappointing news from the treatment room in the aftermath of last Saturday's 6-2 La Liga win over Sevilla after it was revealed that defender Sergio Ramos sustained a hamstring injury in the match.The 25-year-old featured for the full 90 minutes in the Santiago Bernabeu side's impressive away victory, but complained about pain afterwards.Ramos underwent a number of tests on Sunday to determine the extent of the injury and a scan has revealed that the Spain international has suffered a pulled hamstring.It's not yet exactly known how long the versatile defender will be sidelined for, but he is certain to miss Tuesday's Copa del Rey match at home against Ponferradina.Real Madrid is hopeful that Ramos will be match fit in time for los Blancos' first La Liga game after the winter break against Granada on Jan. 8.