The tournament then continued with the top four teams in each group playing in the knockout stage, leading to the championship game.

[12] The final rosters included a mix of MLB prospects (such as Milwaukee Brewers outfielder Brett Phillips and Chicago White Sox outfielder Jacob May for the United States), former MLB veterans (such as Curaçaoan infielder Andruw Jones and Dominican infielder Pedro Feliz) and non-MLB stars (including Japanese pitchers Shohei Ohtani and South Korean infielder Park Byung-ho).

[15] Fox Sports was awarded broadcast rights in Cyprus, Greece, Israel, Italy, Malta, Netherlands and Turkey.

Rights were also awarded to Eleven Sports Network in Belgium, Poland, Singapore and Malaysia; beIN Sports in Indonesia, Singapore and Oceania; LeTV and PPTV in China; Sky Net in Myanmar; Solar TV in the Philippines; i-CABLE in Hong Kong; OSN in the Middle East and North Africa; SBS in South Korea; Videoland in Taiwan; CIRT in Cuba; and Sportsnet in Canada.

[6] In the championship game, Lee Yong-kyu of South Korea recorded a run batted in (RBI) double in the first inning off of Zack Segovia.

Park Byung-ho hit a home run off of Brooks Pounders to left field in the fourth inning.

[4][5] The United States had defeated South Korea during their sole matchup during group play by a score of 3–2 in extra innings.

Kim later explained that the South Korean team made adjustments to better prepare for the fastballs thrown by United States pitchers.

B. Wendelken, and Jake Barrett became ineligible to play in the championship game as they had been added to the 40-man rosters of their respective Major League Baseball organizations.

The WBSC announced that it would be giving away $3,800,000 in prize money to participants, distributed as follows: Despite South Korea's victory in the entire tournament, many South Korean fans and officials were angered and complaining of how the 2015 WBSC Premier League was heavily biased in favor of the co-host nation Japan's team, and that they purposefully set up in advance of Korea's team under disadvantage by restraining them from practicing and giving them rather complicated schedules and obstacles[23] (that including of a stadium fire) that other countries did not needed to go through or have.

The Korea Baseball Organization (KBO) was also under fire for not doing enough to solve the issues of Japan's favorable play in the tournament.