MADRID, April 29: Real Madrid defender Dani Carvajal has injured a muscle in his right leg, making him a doubt to play at Chelsea in the Champions League semifinals. Madrid did not add on Thursday how long its first-choice right back would be out. But the Spanish club is set to visit Stamford Bridge on Wednesday needing a win to advance to the final. Madrid’s defense struggled against Chelsea in a 1-1 draw in their first leg in Spain this week. Coach Zinedine Zidane hopes to have center back Sergio Ramos and left back Ferland Mendy available for the second leg. Madrid are expected to face an uphill task against a rejuvenated Chelsea in the second leg semifinals on May 6. (AP)