Yokozuna Hakuho, left, drives ozeki Kisenosato to the dirt on Day 14 at the Summer Grand Sumo Tournament in Tokyo's Ryogoku Kokugikan. (Hiroshi Kawai)
SUMO/ Unbeaten Hakuho has 25th title in sights on Day 14
Yokozuna Hakuho ushered ozeki Kisenosato down to a fateful defeat on May 25 at the Summer Grand Sumo Tournament to remain unbeaten and assume the sole lead with just one more match to go as he closes in on his 25th career title and yet another prefect 15-day outing.
Yokozuna Hakuho, back, sends ozeki Kotoshogiku sprawling on Day 13 at the Summer Grand Sumo Tournament in Tokyo's Ryogoku Kokugikan. (Shigetaka Kodama)
SUMO/ Unbeaten Hakuho, Kisenosato win on Day 13 to set up showdown
Yokozuna Hakuho and ozeki Kisenosato won their 13th straight bouts at the Summer Grand Sumo Tournament on May 24 to remain unbeaten and set up a much-anticipated showdown on the penultimate day.
Ozeki Kisenosato overwhelms yokozuna Harumafuji to stay undefeated on Day 12 of the Summer Grand Sumo Tournament on May 23 at Tokyo's Ryogoku Kokugikan. (Jun Ueda)
SUMO/ Kisenosato defeats Harumafuji to keep pace with Hakuho on Day 12
Yokozuna Hakuho and ozeki Kisenosato moved a step closer to a final showdown after they overpowered two tough opponents on May 23 and remained undefeated at the Summer Grand Sumo Tournament.
Yokozuna Harumafuji throws ozeki Kotoshogiku down to the dirt on the 11th day of the Summer Grand Sumo Tournament at Tokyo's Ryogoku Kokugikan on May 22. (Nobuhiro Shirai)
SUMO/ Unbeaten Hakuho, Kisenosato make it look easy on Day 11
Yokozuna Hakuho and ozeki Kisenosato breezed through their 11th victims in as many days at the Summer Grand Sumo Tournament on May 22, with ozeki Kakuryu close on their heels with just one loss.
Yokozuna Hakuho pulls down sekiwake Goeido with an elbow lock on the 10th day of the Summer Grand Sumo Tournament at Tokyo's Ryogoku Kokugikan on May 21. (Kazuhiro Nagashima)
SUMO/ Hakuho, Kisenosato extend unbeaten streak on Day 10
Mongolian yokozuna Hakuho and Japanese ozeki Kisenosato demolished their opponents to remain unbeaten on the 10th day of the Summer Grand Sumo Tournament at Tokyo's Ryogoku Kokugikan on May 21.
Ozeki Kakuryu, right, falls to his first defeat, pushed out of the ring by ozeki Kotoshogiku on Day 9 of the Summer Grand Sumo Tournament on May 20 at Tokyo's Ryogoku Kokugikan. (Kazuhiro Nagashima)
SUMO/ Only Hakuho, Kisenosato stay perfect after Kakuryu falls on Day 9
Ozeki Kakuryu fell to his first defeat at the Summer Grand Sumo Tournament on May 20, leaving only yokozuna Hakuho and Kisenosato with perfect records after nine days of competition.
Yokozuna Hakuho throws out No. 3 maegashira Aran on Day 8 of the Summer Grand Sumo Tournament on May 16 at Tokyo's Ryogoku Kokugikan. (Nobuhiro Shirai)
SUMO/ Hakuho, Kisenosato, Kakuryu extend winning streak on Day 8
Yokozuna Hakuho and his ozeki challengers, Kisenosato and Kakuryu, dominated the ring on May 19 to claim their eighth wins and set the pace at the Summer Grand Sumo Tournament, with Harumafuji languishing two losses behind.
Undefeated yokozuna Hakuho pushes No. 3 maegashira Takarafuji out of the ring on Day 7 of the Summer Grand Sumo Tournament on May 18 in Tokyo's Ryogoku Kokugikan. (Hikaru Uchida)
SUMO/ Yokozuna, ozeki all win except Kotooshu on Day 7
Yokozuna Hakuho and the ozeki pair of Kisenosato and Kakuryu completed the first seven days of the Summer Grand Sumo Tournament on May 18 without a blemish.
Yokozuna Hakuho, left, forces komusubi Okinoumi down on Day 6 of the Summer Grand Sumo Tournament on May 17 in Tokyo's Ryogoku Kokugikan. (Hiroyuki Yamamoto)
SUMO/ Hakuho and two ozeki remain undefeated on Day 6
Yokozuna Hakuho and the ozeki pair of Kisenosato and Kakuryu continued to dominate at the Summer Grand Sumo Tournament on May 17 in Tokyo's Ryogoku Kokugikan, keeping their records spotless after six days of competition.
Yokozuna Harumafuji is pulled down by komusubi Tochiozan on Day 5 of the Summer Grand Sumo Tournament on May 16 at Tokyo's Ryogoku Kokugikan. (Jun Ueda)
SUMO/ Harumafuji suffers second loss as Hakuho stays unbeaten on Day 5
Hakuho won easily but rival yokozuna Harumafuji suffered a humiliating defeat--his second—on Day 5 of the Summer Grand Sumo Tournament.
Yokozuna Hakuho throws down No. 2 maegashira Kitataiki at the Summer Grand Sumo Tournament on May 15 at Tokyo's Ryogoku Kokugikan.  (Hiroshi Kawai)
SUMO/ Top wrestlers led by yokozuna duo roll to wins on Day 4
Led by two impressive performances from yokozuna duo Harumafuji and Hakuho, the top wrestlers all won their fourth-day bouts at the Summer Grand Sumo Tournament on May 15 at Tokyo's Ryogoku Kokugikan.
Yokozuna Hakuho, left, pushes top maegashira Myogiryu out of the ring for an easy win to stay perfect on Day 3 of the Summer Grand Sumo Tournament on May 14 at Tokyo's Ryogoku Kokugikan. (Nobuhiro Shirai)
SUMO/ Harumafuji barely avoids second loss on Day 3
Yokozuna Hakuho and all the top wrestlers won their third-day bouts on May 14 at the Summer Grand Sumo Tournament at Tokyo's Ryogoku Kokugikan, though upset-prone Harmafuji--already one loss behind--showed signs of shell shock as he jumped back into the fray.
The muko-jomen (opposite side of the main entrance) in the Kokugikan sumo arena in Tokyo is dark even in the daytime. At night, even security guards do not venture there except for when they are on patrol. (Yoshinori Mizuno)
SUMO/ 'Haunted' Ryogoku Kokugikan frightens even the champions
Former yokozuna Kitanoumi doesn't scare easily, but even the big man avoids a dark area of Tokyo's Ryogoku Kokugikan.
Yokozuna Harumafuji, right, is pushed out of the ring by top maegashira Myogiryu on Day 2 of the Summer Grand Sumo Tournament on May 13 at Tokyo's Ryogoku Kokugikan. (Nobuhiro Shirai)
SUMO/ Harumafuji first of the big names to fall on Day 2
Unpredictable yokozuna Harumafuji stumbled out of the ring for his first defeat just two days into the Summer Grand Sumo Tournament at Tokyo's Ryogoku Kokugikan arena on May 13, while defending champion Hakuho and the other top wrestlers continued to add to their victories.
Yokozuna Hakuho, left, gets a brief scare from komusubi Tochiozan, but rallied back easily to win on Day 1 of the Summer Grand Sumo Tournament on May 12 at Tokyo's Ryogoku Kokugikan. (Noriyasu Nukui)
SUMO/ Hakuho, top wrestlers off to winning starts on Day 1
Defending champion Hakuho and all of the top wrestlers made it through the first day of the Summer Grand Sumo Tournament with flying colors on May 12 at Tokyo's Ryogoku Kokugikan.
Makuuchi division sumo wrestler Sokokurai trains on April 11 at the Arashio stable in Tokyo’s Nihonbashi district. (Yasuhiro Sugimoto)
SUMO/ Once-banned sumo wrestler seeking to prove his innocence on the dohyo
Early on the morning of April 11, makuuchi division sumo wrestler Sokokurai was training diligently at the Arashio stable in Tokyo’s Nihonbashi district for his comeback.
Sokokurai meets with his Arashio stablemaster and others on April 3 at the end of a news conference in Tokyo. (Makiko Ikenaga)
Sokokurai reinstated, will wrestle in Nagoya basho
One-time disgraced makuuchi division wrestler Sokokurai will be returning to the raised ring after the Japan Sumo Association overturned his 2011 banishment over alleged match fixing.
Sokokurai, left, with his lawyer Hatsuo Komatsu after the March 25 Tokyo District Court ruling (Hiroki Endo)
Tokyo court throws out dismissal of sumo wrestler
The Tokyo District Court ruled as invalid a decision by the Japan Sumo Association two years ago to dismiss a wrestler for suspected involvement in a bout-fixing scandal.
Yokozuna Hakuho, left, throws his rival yokozuna Harumafuji to the dirt to secure his unprecedented ninth title with a perfect 15-0 record on March 24 at Osaka's Prefectural Gymnasium. (Ryo Ikeda)
SUMO/ Hakuho makes new record, wins ninth title with no loss on final day
Yokozuna Hakuho established a new gold standard at the Spring Grand Sumo Tournament by sending rival Harumafuji to the dirt to win his final match on March 24 and mark an unprecedented ninth perfect 15-0 finish.
Yokozuna Hakuho, left, throws down ozeki Kakuryu on Day 14 of the Spring Grand Sumo Tournament on March 23 at Osaka's Prefectural Gymnasium. (Ryo Ikeda).
SUMO/ Hakuho's final obstacle for perfection: Struggling Harumafuji
With his 24th championship already secured, the only question for yokozuna Hakuho is whether he can finish the Spring Grand Sumo Tournament undefeated.