Bulldogs forward Tony Williams had one of his best games of the year as he helped his team down his former club Manly in the semi finals.

Tony Williams out for the season

The Bulldogs have lost Tony Williams for rest of the season after the hulking forward suffered a torn pectoral at training this week.

The back-rower will undergo surgery next week, which is expected to sideline him for around six months.

Read more at bulldogs.com.au