already retired Musoyama and Katayama, the latter of whom was also from the same stable. He made a smooth entry into jūryō posting two consecutive winning tournaments of 9-6 and 10-5. However, in the wake of an investigation by the national police into illegal baseball gambling by sumo wrestlers, Daidō was one of many wrestlers who admitted involvement. As punishment by the JSA Daidō was compelled to sit out the July 2010 tournament. This tournament would have been his highest rank yet at jūryō #2. This was an ironic repeat of his "debut" in the top ranks of makushita in 2008 where his injury had forced him to sit out. As another stipulation of the punishment, Daidō and others implicated were demoted by one division in the following September tournament. This would put Daidō back to makushita #1. He would manage a 4-3 winning record in this tournament and return to jūryō in the November tournament. He achieved three consecutive winning tournaments, interrupted only by the March tournament that was cancelled due to match fixing allegations. During this period, in the ongoing police investigation into baseball gambling, Daidō was implicated as one of four still active wrestlers who had used a gambling ring operated by then active sumo wrestlers from Onomatsu stable to place bets on baseball. The prosecutor recommended charges, but ultimately no indictments were handed down due to lack of compelling evidence. Daidō's performance was largely unaffected by the turmoil around the allegations and his successful tournaments earned him promotion to the top tier makuuchi division in July 2011. He debuted at maegashira #12, but soon ran into trouble, losing most of his early bouts. However, he improved enough during the second half of the tournament to pull out a 6-9 record. Though it was his first losing tournament since May 2008, it was a good enough result that he was only demoted to maegashira 15 for the following September tournament. An 8-7 record would return him to maegashira #12 for the November tournament where he would again achieve a winning record, ensuring a promotion to maegashira 9, for 2012's opening tournament. However, in his next three tournaments he narrowly failed to achieve winning records, with a 6–9 and two consecutive 7–8s. A disastrous 1–14 record in the July 2013 tournament saw him demoted back to the jūryō division, and he was never to return to makuuchi. Retirement