the US Pro Indoors at Philadelphia´s Spectrum was one of the biggest events of the year in the 70´s and 80´s, the greatest WCT regular tournament and the unofficial indoor world championships. Well, Connors lost to Stockton ( 77) and Mac ( 82 ) in two finals..but won a record of 4 titles, beating the best of the best: Bjorn Borg, whom he humilliated in 76, same he did to Tanner in 78 and Ashe in 79.His only hard final came in that classic match that he won against JMac in the 1980 tourney. Connors record on hard, grass and har tru makes it sometimes not that evident how sharp, dangerous and powerful he was indoors.Such as his Philadelphia´s results indicate. How could he do it? What made the difference? WHAT KEPT HIM GOING?