Kawaguchi Tomohiro (川口 朋広) is a truck driver and SASUKE Trials Qualifier.
Kawaguchi first tried to compete in SASUKE 20 through the trials, however he failed to qualify.
He returned to the trials and was one of the eight qualifiers in the SASUKE 21 Trials. In the trials, he cleared the "Final Stage" in 46.64 seconds, and managed to get the #2 qualifying spot, only one second behind Miyagi Takuya.
During the tournament, he showed great speed, clearing most of the obstacles quickly. However, after he cleared the Half-Pipe Attack, he moved too quickly, lost his balance, and went off the course.
In the tournament, he wore #78 but his run was digested. It is shown that he made it to the Slider Jump and was able to touch the net. However, he was unable to hold on and back flipped into the water. He did not compete in SASUKE 23.
He returned in SASUKE 24 wearing #47. He breezed through the First Stage, and despite taking two attempts on the Half-Pipe Attack, he became the first person to clear with an impressive 16.10 seconds remaining. In the Second Stage, he flew up the Salmon Ladder, but he rushed his dismount on the Unstable Bridge and fell back into the water in a similar fashion to Urushihara Yuuji in SASUKE 23.
He returned in SASUKE 25 and received #67 in the lottery. While his run was all cut, he was shown to have failed the Circle Slider as he couldn't get both hands on the ring. He missed SASUKE 26. Then in SASUKE 27, he failed the Rolling Escargot and was cut from broadcast.
Returning in SASUKE 30 after missing the previous two tournaments, he passed the first stage with over 21 seconds remaining, then became the second competitor that tournament to clear the Second Stage, doing so for the first time. In the Third Stage, he became only the second person (after Morimoto Yūsuke) to clear the Crazy Cliffhanger, and went on to clear the stage, becoming the first man in the post-Monster 9 period to reach the Final Stage, and being only the sixth person since SASUKE 4 to clear the stage in their first attempt at the stage. However, he was slow to climb up the Spider Climb as he kept slipping on the walls (which did not seperate after 15 seconds, interestingly) and timed up at the Tsuna Nobori at 15 meters.
He returned back in SASUKE 31. He was able to clear the First Stage again without any trouble. Then he became one of the 8 to clear the second stage. In the third stage, he made it past the first 3 obstacles and everybody was expecting to make it back to the final stage. However to the shock of everyone, he went out on the Crazy Cliffhanger. He is the first person to have failed the Crazy Cliffhanger after clearing it before.
He then competed in the third international competition for American Ninja Warrior. In his run for the Second Stage, he made it to Roulette Row, but failed the dismount due to having too much momentum. He did however do the best out of the three who ran the Second Stage of Team Japan. The heat however, was won by Drew Drechsel who completed the stage. His Third Stage run however, ended early when he slipped on the Doorknob Grasper and ended up not only doing the worst in his heat, but doing the worst out of everyone who ran the Third Stage that day. It was said that he fell on the the obstacle because he didn't know that the last two doorknobs spin.
He then competed in SASUKE 32. He cleared the First Stage that had taken out notable competitors with over 20 seconds remaining, and also cleared the mildly revamped Second Stage with 15.59 seconds remaining and little trouble. However, prior to and during his run conditions had been wet. This did not seem to hinder his performance on the Drum Hopper Kai which he completed with little trouble, however he failed the first transition of the Flying Bar surprisingly, ending the tournament with no Third Stage clears as he was the last man standing.
In SASUKE 33, Kawaguchi was given the number 99 - his highest number to date. However, he was unable to live up to expectations as he fell after his transition over to the sandbag on the Double Pendulum as he jumped for the sandbag too early. This result saw Kawaguchi eliminated in the First Stage for the first time since SASUKE 27.
In SASUKE 34, now given the number 98, exacted his revenge on the Double Pendulum and completed the First Stage. He also completed the Second Stage with 6 seconds remaining. In the Third Stage, he completed the first half of the stage, and on the Ultra Crazy Cliffhanger, he completed the first transition, unfortunately he failed the obstacle as he went for the second transition to the moving ledge.
|21||47||Failed Half-Pipe Attack (First Stage)||Course Out.|
|22||78||Failed Slider Jump (First Stage)||Digest.|
|24||47||Failed Unstable Bridge (Second Stage)||Dismount.|
|25||67||Failed Circle Slider (First Stage)||All Cut. Shown in Intro.|
|27||25||Failed Rolling Escargot (First Stage)||All Cut.|
|30||2967||Failed Tsuna Nobori (Final Stage)||Time Out. (15 meters up)|
|31||97||Failed Crazy Cliffhanger (Third Stage)||Transition to 4th ledge.|
|32||97||Failed Flying Bar (Third Stage)||First transition. Last Man Standing|
|33||99||Failed Double Pendulum (First Stage)|
|34||98||Failed Ultra Crazy Cliffhanger (Third Stage)||Second Transition.|