All three forwards played much of last season for the Sharks, who finished with the NHL's best regular-season record before losing their first-round playoff series to Anaheim.
Goc, a first-round draft choice by San Jose in 2001, scored 11 points in 55 games with the Sharks last season. Injuries have limited the defensive-minded Goc's play for the past two seasons.
Plihal scored 13 points in 64 games with San Jose last season as a 26-year-old rookie.
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