1937-09-23 Harry Jeffra w pts 15 Sixto Escobar, Polo Grounds, Manhattan, NYC, New York, USA - NY/NBA
23 September Harry Jeffra w pts 15 Sixto Escobar, Polo Grounds, Manhattan, NYC, New York, USA – NY/NBA. Referee: Frank Fullam. Having already beaten Escobar (117¼) on points twice previously in non-title bouts, Jeffra (116½) used his left hand to perfection, jabbing and moving at speed to win the points and make himself a difficult target. While Escobar made the mistake of continually looking for an opening to land a knockout punch rather than keeping busy, the challenger, who it was thought would be weakened by weight making, just kept going. On winning the unanimous decision, a return clause contracted Jeffra to defend against Escobar within 90 days.