Roenick, playing in his 19th NHL season, needs one goal to become the third American-born player to reach the 500 goal plateau for his career. The others are Mike Modano (509) and Joe Mullen (502).
Los Angeles got its only goal from Brad Stuart at 5:28 of the first.
Goalie Jason LaBarbera was beaten three times on 28 shots for the Kings, who beat the Sharks, 5-2, Friday night in the front end of this home-and-home series.
On the power play, San Jose scored on its only chance, and the Kings went 0-for-4.
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