Jakub Voracek could be sidelined for about four weeks because of a sprained right knee, according to his KHL squad Lev Praha. The injury occurred on Saturday during the third period of a 4-3 loss to SKA St. Petersburg. Voracek has produced one goal and six assists in seven games overseas, but missing a month, or possibly more, of action won't sit well with Philadelphia nor Lev, who are both invested in his success.