Fonseca, Lew
Fonseca remained involved with professional baseball well into his eighties. He was a hitting instructor for the Chicago Cubs until the age of 82 and was an exponent of line drive hitting sprayed to all parts of the field. Among his pupils were Rick Monday and Bill Madlock. In many respects, Fonseca's contributions off the field rivalled or even eclipsed what he accomplished on the field. -Baseball Reference