Darth Maul should be able to take out all four at the same time. He can augment his reflexes and speed to become physically superior to them. Then, he also has slight precognitive abilities and can use the force push to knock a few of them back. Adamantium is not involved in this thread, so there is no question that he can easily cut right through any limbs or weapons of all four competitors. I think any physical attacks either of the four attempt will result in an arm or leg being promptly cut off.