The Sharks and Kings dueled extra time in the 1,230th and final game of the NHL's regular season.
Both teams began the day with hopes of claiming the Pacific Division title, but they needed a loss by Phoenix for that to happen. Phoenix did not cooperate, claiming the division crown earlier in the evening with a win over Minnesota.
San Jose grabbed the No. 7 seed in the playoffs and will take on St. Louis in the opening round. Los Angeles, as the eighth seed, will face Vancouver.
Boyle tallied 35 seconds into the final period and Patrick Marleau tied it on the power play with 11:46 remaining.