Chelsea's top scorer Alvaro Morata has pulled out from the Spain squad for their final two World Cup qualifiers, with Barcelona midfielder Andres Iniesta and Real Madrid right-back Dani Caraval also due to miss the matches with a variety of fitness problems.
The Spanish striker hobbled off in the 1-0 home defeat to Manchester City on Saturday afternoon.
The Spanish Football Federation have this evening confirmed that Alvaro Morata has suffered a myofascial injury to his hamstring muscles, potentially ruling him out for up to six weeks.
Since joining from Real Madrid for £57million in the summer, Morata has scored seven goals for Chelsea and quickly established himself as one of the club's key players.
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Geologists are now assessing the size and weight of the second rockfall, but initial estimates suggest it was 10 times bigger. Zabor had just climbed the section that collapsed Thursday and was able to record video showing the massive dust cloud.
This will likely rule the 24-year-old out for a minimum of a month, with the potential for around six weeks on the sidelines, depending on the severity of the problem.
Morata's injury is a blow but with the global break scheduled, it has come at the best possible time for Chelsea.
Blues boss Antonio Conte, had hoped he would be available after the worldwide break.
The Chelsea signing has already scored six goals in seven games in the Premier League to make a brilliant start to his Blues career including a hat-trick at Stoke City.