MBLAQ's Lee Joon and 2AM's Jinwoon will soon be making guest appearances on MBC's "Infinity Challenge" for their special 'rowing competition' project. All eight cast members of "Infinity Challenge" and a coxswain (person in charge of boat navigation) are set to compete in the upcoming competition. Despite the large number, they were still in need of two extra members to fill up their team line-up. During last week's broadcast, the cast members personally called several of their close celebrity friends and idol group members to make arrangements on whether they could make time to participate in the competition. The final round of contestants came together for an urgent meet, where they had to perform 1000m on a rowing machine to test which of the candidates received the best time. In the end, it was Lee Joon and Jinwoon who were able to take the spot of guest members. This rowing event will mark the first of this year's special projects for "Infinity Challenge". The team will be aiming to take part in the competition in the coming summer season. Source: Star News via Nate