MIAMI GARDENS, Fla. — Red and white Polish flags waved from every section of Stadium Court at the Miami Open on a sunny Saturday afternoon as incoming world No. 1 Iga Swiatek continued her dominance of women’s tennis this season with a 6-4, 6-0 win over former No. 1 Naomi Osaka in the championship. Swiatek has won 17 matches in a row and three consecutive WTA 1000 titles after trophies at Doha and Indian Wells. She is the fourth woman in history, and the youngest, to capture the “Sunshine Double” (Indian Wells and Miami), following Steffi Graf, Kim Clijsters, and Victoria Azarenka. On Monday, …