Marat Grigorian fights Ivan Kondratrev at ONE Championship's "Big Bang" event. (ONE Championship) Former GLORY Lightweight Champion Marat Grigorian won his ONE Championship debut on Friday, coming back from being knocked down to stop Ivan Kondratev in the second round. The win for Grigorian came in the main event ONE's "Big Bang" card from the … Continue reading Marat Grigorian Makes Comeback Over Ivan Kondratev To Win ONE Debut →