Juventus striker David Trezeguet faces a month on the sidelines after injuring a calf muscle in training, the club said on Friday. "David won't be able to go on the pitch Sunday vs. Udinese," the Italian giants said on their website. Juventus coach Ciro Ferrara is likely to rely on Amauri and Vincenzo Iaquinta to lead the frontline in Sunday's Serie A game against Udinese. Former France striker Trezeguet is Juve's top scorer with six league goals so far this season.