When Tanaka was first announced for the April 2nd show his team stated that his foe world be worled ranked, and although Sukkasem isn't a great foe they have actually kept to their word with the Thai being ranked #15 by the IBF at Bantamweight.
Tanaka is viewed as another of Japan's rising number of Super Bantamweight prospects. Although not regarded as highly as some other fighters in the region he is touted as a fighter with the potential to go all the way following an excellent 63-14 amateur record and he has already scored notable wins over Monico Laurente and Denkaosan Kaovichit. Another win here would push Tanaka on to the verges of the world rankings.
Whilst Tanaka will be favoured it's worth saying that Sukkasem has faced some notable opposition, including Ik Yang, Billy Dib, Mark Magsayo and Yusaku Kuga, all of whom beat the Thai. That level of experience will help him here against Tanaka, but he will still be looking for his biggest win to date here.