Knapp has accrued an average at the plate of .209 for his career in addition to 83 scored runs and an OPS of .333. He has gone down on strikes 276 times and earned a walk on 103 occasions, contributing to a .309 on-base percentage. In his professional baseball career, Knapp has hit 13 baseballs out of the park while driving in 66 runs. His slugging percentage is .024 and he has accumulated 236 bases. For his time in the league, he approached the plate 879 times and has notched a base hit 158 times.
