After every home run, Bryce Harper puts up the sign for "I love you" as he crosses home plate. As much as the former MVP appreciates his fans, the symbol is dedicated to his mother Sheri ... even if she leaves games before he hits walk-off grand slams.

In his first at-bat back from bereavement following the loss of his mother, Stephen Piscotty hit a home run. He was originally traded to Oakland so he could be closer to her and the family.

No Mother's Day in MLB is complete without mention of Braden's perfecto. Braden was raised by a single mom who died while he was in high school. The left-hander was then raised by his grandmother, who was in attendance for his perfect game.