Substitute Isa Sakamoto netted with virtually the last kick of the game to send Gamba Osaka through to the Emperor’s Cup final with a thrilling 3-2 extra-time victory over Yokohama F Marinos on Sunday. Dani Poyatos’ men will contest the Nov. 23 final at Tokyo’s National Stadium against Vissel Kobe following their 2-1 victory at home to Kyoto Sanga in Sunday’s other semi. The semifinal at Gamba’s Panasonic Stadium home looked set to be decided by penalties until Sakamoto struck the winner in the last of five additional minutes in the second half of extra time. The visitors appeared to have seal…