Support our high school sports coverage by becoming a digital subscriber. Subscribe now SANTA ANA – Corona del Mar’s boys water polo team is showing its resolve under first-year head coach Lucas Reynolds. Just three days after falling to rival Newport Harbor in the Battle of the Bay, the Sea Kings used a sizzling start to sink Foothill 15-9 in the finals of the S & R Sport tournament Saturday at Foothill High. Corona del Mar (16-4) opened a 9-1 lead early in the second period and never trailed en route to its second tournament title this month. The Sea…