Update M-1 Global. Take a look at the official promo video of Kunchenko vs Grabovic. M-1 Challenge 70 is the nearest upcoming MMA event. It is set on Septermber 10 in the city of Syktyvkar, Russia. The main fight of the evening is a welterweight title fight between reigning champion Alexey Kunchenko (13-0) and Maxim Grabovich (4-1).