SYDNEY—Felix Auger-Aliassime clinched the ATP Cup title for Canada on Sunday with a 7–6 (3), 6–3 singles victory over Roberto Bautista Agut to give his country an insurmountable 2–0 lead against Spain. Denis Shapovalov opened the match for Canada with a 6–4, 6–3 win over Pablo Carreno Busta. Auger-Aliassime and Shapovalov won a deciding doubles…