Joshua Yoo, correctly stylized josh yoo, was a projected MATHCOUNTS National Champion in 2017, his 8th grade year, after having made an amazing performance of 23 during 7th grade nats. Due to personal health issues, he dropped down to 5th place in Pennsylvania states written, and was upsetted by a Chinese immigrant and three monkeys in the final countdown round which resulted in the failure of more than 90% of the posts in the 2017 National Mathcounts predictions thread.

josh yoo commented that he was simply sandbagging and that he would make MOP shortly after. Due to personal health issues, he did not make USAJMO, and this prediction has been postponed to next year.