West Michigan is 62-28 overall on the season and 17-6 in the second half, two games ahead of Fort Wayne in the second half standings.
Whitecaps outfielder Derek Hill had two triples and one run batted in, while Danny Woodrow added two hits, two runs and one run batted in. Cole Bauml had two doubles on the day while also adding a RBI and a run scored.
Starting pitcher Tom De Blok picked up his second win of the season, improving to 2-0 on the year. De Blok pitched seven innings, striking out eight and allowing three hits.
West Michigan will close out its series with Quad Cities on Monday night at 7 p.m.