Getty Marcelo Mayer's rookie season may be over after just 44 games. The Boston Red Sox have dealt with issues in their infield all season. First baseman Triston Casas tore a patellar tendon on May 2, ending his season. And $120 million free agent third baseman Alex Bregman missed 42 games with a quad injury. With a carousel of David Hamilton , Kristian Campbell, Romy Gonzalez and even regular centerfielder Ceddanne Rafaela and minor league Gallup Nick Sogard at second, that position may be the