| 2007 BWF [World Junior Championships – boys' singles|2007] | The Trusts Stadium, Waitakere City, New Zealand | 
Asian Junior ChampionshipsBoys' singles
| Year | Venue | Opponent | Score | Result | | 2006 | Kuala Lumpur Badminton Stadium, Kuala Lumpur, Malaysia |  The BWF Super Series, launched on 14 December 2006 and implemented in 2007, was a series of elite badminton tournaments, sanctioned by Badminton World Federation. BWF Super Series had two level such as Super Series and Super Series Premier. A season of the Super Series featured a total of twelve tournaments around the world since the 2011 season, with successful players invited to the Super Series Finals held at the year end. Men's singles
| Year | Tournament | Opponent | Score | Result | | 2010 | All England Open | silver2
BWF International Challenge/SeriesMen's singles
| Year | Tournament | Opponent | Score | Result | | 2007 | Swedish International | gold1
Record against selected opponentsIncludes results against Olympic quarterfinals, Worlds semifinalists, and Super Series finalists, as well as all Olympic opponents.
Gambling scandalIn October 2015, Tago was removed from Japan's national team by head coach Park Joo-bong due to indiscipline, after he repeatedly missed training sessions and was proving to be a bad influence to other players. On 8 April 2016, Tago admitted to squandering 10 million Japanese yen over a period of 2 years after making over 60 visits to illegal casinos alongside other professional players, including countryman Kento Momota, who was banned from competition until late 2017 and forced to miss the Olympic Games as a result. Gambling in Japan is illegal, with frequent gambling punishable with imprisonment of up to 3 years.
|
|
|
|