The only "true" backup at second base, shortstop, and third base is Andruw Monasterio. Isaac Collins could be a critical piece of the Milwaukee Brewers infield down the stretchCollins was originally drafted by the Colorado Rockies as a second baseman out of Creighton University. During his first three minor league seasons, he played exclusively at second base and in the outfield before adding third base to his repertoire in 2023. How much the Brewers trust Collins at third base could shape their optimal lineup down the stretch. With time left in the regular season, Milwaukee has the flexibility to test out this setup, if they choose.