Mumphrey has earned a batting average of .289 for his career in addition to 660 scored runs and an OPS of .443. He has struck out 688 times and has taken a walk on 478 attempts at the plate, contributing to a .349 on-base percentage. In his career, Mumphrey has hit 70 baseballs out of the park while knocking in 575 runs. He has compiled a slugging percentage of .094 in addition to earning 1,979 bases. During his time in professional baseball, he approached the plate 5,545 times and got on base with a hit 1,442 times.
