Darth Maul vs Pong Krell

- The Clone Wars versions of both

Round 1: Hand-to-Hand combat only
         - Maul gets his mechanical legs
Round 2: All-out Combat

Krell rips him in half

Krell probably destroys in hand to hand, but Maul wins all out. Maul's showing against Clones in S7 is better than Krell's, in my opinion. Also, unlike Krell, we've actually seen Maul engage in multiple lightsaber duels against some of the most formidable combatants in the Clone Wars, including Obi-Wan, Savage Oppress, Mace Windu, General Grievous, and Sidious himself. Krell just doesn't have the feats to suggest he's on the level of someone like Maul.

Maul falls down a pit and dies