Undefeated Contender Series standout Akbar Abdullaev is booked to make his UFC debut against Mairon Santos in a lightweight bout at UFC Saudi Arabia on Dec. 5 in Riyadh. Abdullaev is 14-0 with finishes across the board, including a 19-second DWCS knockout. Santos moves up from featherweight at 17-1 overall and 4-0 in the UFC. The promotion has not posted the bout on its event page yet.