Eric Freeman had 15 points, 11 rebounds and five assists to lead Battery Creek to a 65-40 win over Hilton Head Island. Devonte Wilson also scored 15 for the Dolphins (5-0), adding four rebounds and an assist.
The Dolphins led just 29-28 at the half before holding the Seahawks to four points in the third quarter.
Markell Smalls added eight points for Battery Creek, which hosts Bluffton on Friday.
Trey Clifford led the Seahawks (1-3) with 12, while Patrick Riley added 10. HHH faces Whale Branch on Tuesday.