Genoa midfielder Cristobal Jorquera faces a month on the sidelines with a thigh strain. The Chile international lasted just nine minutes of Il Grifone\'s 1-0 defeat at Siena on Sunday, and medical tests have now confirmed the extent of the damage. A statement on the club\'s website read: \"The club can confirm that midfielder Cristobal Jorquera underwent a medical examination and a magnetic scan at the Baluardo Institute following the injury he suffered at Siena. The scan confirmed a second-grade lesion to his right thigh muscle.\" Santiago-born Jorquera, who can also play as a second striker, signed a four-year contract with Genoa in 2011 after leaving hometown club Colo Colo.