Rubuta ci gaba don wannan sakin layi - Sousa ya koma gasar cin kofin Davis a watan Satumba don taimakawa Portugal ta doke Belarus kuma ta sami ci gaba zuwa rukunin Turai / Afirka na Rukunin I a shekarar 2016. Duk da rashin nasararsa na farko na roba, ya lashe roba biyu tare da Elias da kuma yanke shawarar roba guda da Uladzimir Ignatik. A gasar St. Petersburg Open, Sousa ya kai wasan karshe na uku a kakar wasa ta bana. Bayan cin nasara akan Marcel Granollers, Simone Bolelli da Dominic Thiem, Sousa ya zama na biyu ga Milos Raonic a cikin saiti uku. A watan Oktoba, Sousa ya shiga tseren 1<unk>4 tare da rashin nasara a farkon zagaye a gasar Malaysian Open, Japan Open, Shanghai Masters
da kuma Kremlin Cup. A Valencia Open, Sousa ya kammala kakar wasa tare da taken ATP na biyu a cikin aikinsa kuma na farko na kakar wasa a cikin ƙoƙari huɗu na ƙarshe. Bayan ya doke 'yan wasa hudu da suka fi girma, ciki har da Benoît Paire, Sousa ya ci nasara da Roberto Bautista Agut na 7 a wasan karshe a cikin wasanni uku. Ya kai sabon matsayi mafi girma a cikin mako mai zuwa a duniya No. 34. Sousa ya gama kakar wasa a matsayin mai aiki a duniya mai lamba 33 tare da nasara guda 38. A watan Nuwamba, ya karɓi lambar yabo ta wasan Tennis na Shekara a karo na biyu daga Tarayyar Tennis ta Fotigal da Confederação do Desporto de Portugal.