That changed in his 9th fight as he took on Mongolian born Davaa Ona. Ona had entered the bout 8-1 and had never been stopped, that was until he got in the ring with Tsuchiya and the two men traded leather.
Within a minute or saw of the fight starting Ona was down thought it seemed as much a balance issue as a punch. Tsuchiya seemed to think that Ona was hurt and went straight after him and what followed was a round of slugging from both with neither man landing much clean due to how wide their shots were. When they did land however they seemed to rock the other.
Tsuchiya had been facing opponents who simply couldn't stand up to his power up to this point. This time he found someone who could stand up to it and fire back, as Ona did towards the end of the second round. Sadly for Ona his success was his downfall and in round 3 an uppercut from Tsuchiya rocked him. Subsequent flurries from Tsuchiya dropped and then stopped Ona who became victim #10 for Tsuchiya though had survived longer than the previous 9 opponents.
Sadly Ona hasn't fought since this bout, back in May 2011 whilst Tsuchiya has began to run into fighters who can take, or avoid, his power. Those fighters have managed to beat him with Masayoshi Nakatani doing a sensational job on him last year and Leonardo Zappavigna beating him in a blood and guts battle earlier this year. Thankfully due to Tsuchiya's style he's always going to be welcome in to interesting bouts though he does need to win a few before being thrown in with a tough opponent.
(Video courtesy of Ebibox)