Red Sox sign No. 4 MLB Draft pick Marcelo Mayer as shortstop reportedly gets $6.6 million bonus | CBS Sports Headlines Red Sox sign No. 4 MLB Draft pick Marcelo Mayer as shortstop reportedly gets $6.6 million bonus Mayer will receive full slot value, or the highest signing bonus handed … Continue reading Red Sox sign No. 4 MLB Draft pick Marcelo Mayer as shortstop reportedly gets $6.6 million bonus