Kammala jumla mai zuwa: Ya yi kyakkyawan farawa ga kakar 2012/13, ya doke Tony Drago da Robert Milkins don cancanta zuwa matakan karshe na
Australian Goldfields Open a Bendigo; a can ya doke dan wasan na gida James Mifsud 5<unk>0, kafin ya fita daga gasar ta hanyar cin kwallaye iri daya da Ding Junhui. A Wasannin Welsh Open na 2013, McManus ya kai wasan kusa da na karshe tun bayan Grand Prix na 2006, tare da nasara 4<unk>2 a kan lambar 16 mai lamba Barry Hawkins, sannan kuma ya dawo da rawar gani don doke Joe Perry 4<unk>3, bayan ya ragu da 0<unk>3. An doke shi a wasan kusa da na karshe 3×5 daga ɗan'uwansa Stephen Maguire. Gasar da ta biyo baya, Haikou World Open, ta ga McManus ya lashe wasanni uku a cikin cancantar shiga matakan karshe na gasar; sannan ya doke Lin Shuai na gida 5<unk>3, kafin ya fuskanci dan uwansa John Higgins. McManus ya ba da kyakkyawan aiki; a ƙarshe ya rasa 3<unk>5, amma ya sami maki masu daraja a cikin tsari.