Forum:KB:Meeting his match

How many times has Palpatine faced an opponent or situation in canon, where he was in trouble of losing or dying. Here's what I know. Mace Windu, Yoda, Galen Marek, unspecified sith spirits on Korriban confining him to a bacta tank, The Battle of Korriban during the Galactic Civil War, Arden Lyn? and Luke Skywalker in his second duel on Byss. Please confirm on each or add more.