Jantel Lavender scored 19 points and 73 win over the Tulsa Shock.
Ticha Penicheiro added 13 points and seven assists, while Kristi Toliver had 12 points for the Sparks, who have already been eliminated from playoff contention.
Andrea Riley and Liz Cambage each scored 18 points, but could not prevent the Shock from falling to 3-30 on the season, marking the most losses for a WNBA team since the Atlanta Dream went 4-30 in 2008. No WNBA team has ever finished with more than 30 losses in a single season.
Tulsa, which lost a league-record 20 straight games earlier in the year, closes the season on Sunday against San Antonio.