The Gochisozan Oyakata prize will be awarded to the bench rikishi with the most 'ganbare line-ups'. A 'ganbare line-up' happens when all victorious rikishi are placed above all losing rikishi. For example:
4 Asashoryu [+] 3 Kaio [+] 3 Wakanosato [+] 2 Kotomitsuki [+] 2 Dejima [+]
Bench: Kyokushuzan [+] Takamisakari [-] Hokutoriki [-] Kotonowaka [-] Iwakiyama [-]
The very rare all-winners/all-losers line-ups still count as 'ganbare line-ups' and there is no special treatment in the case of kyujo-automation. If 2 or more Bench rikishi have the same number of 'ganbare line-ups' at the end of the basho, the Bench rikishi with the least number of wasted points during the basho will be awarded the prize. Wasted points are winners on the bench that could have been used to claim points. For example:
4 Asashoryu [+] 3 Kaio [+] 3 Wakanosato [-] 2 Kotomitsuki [-] 2 Dejima [-]
Bench: Kyokushuzan [+] Takamisakari [+] Hokutoriki [-] Kotonowaka [-] Iwakiyama [-]
would be 5 wasted points (Kyokushuzan and Takamisakari) that could have replaced Wakanosato/Kotomitsuki for more points for the player. Should the total wasted points over the entire basho be tied, the winner of the Oyakata Prize will be the player with the earliest Ganbare line-up. There are no further tie-breaks, so it is possible to have multiple winners in a basho.
To be eligible for this prize, a Bench rikishi must have registered at least 3 'ganbare line-ups'. If no Bench rikishi manage to make this requirement, no Gochisozan Oyakata prize will be awarded for that Bench basho, and the prize will be kept for the next Bench basho.
The intent of the prize is to reward players that do the best that they can on a given day. They have placed all the winners foremost in the line-up and all the losers hindmost. As a ganbare line-up is a relatively rare event, there is only one prize among all divisions. Furthermore, as we are rewarding effort, there is no need to achieve kachi-koshi to qualify for the prize.