Yoda mastered Ataru to its highest levels. Yoda moves faster than any jedi besides Luke. His force potential rivals Darth Vader's and we know Vader has done some INSANE TK. He had Sidious TRYING TO RUN from him. Kasim is good with sabers, but gets WTFpwned in the Force. Yoda shouldn't even need to draw his saber when dueling Kasim. Yoda can just rip through Kasims force shield. If Yoda can rip through Sidious' Force Shield and blast a Push at him, he can surely do the same to a far weaker, slower Kasim.
Sidious> Kasim
Dooku>Kasim
ROTS Anakin>Kasim
Kenobi>Kasim
Windu>Kasim
Maul>Kasim
Exar Kun>Kasim
And Yoda is a better duelist than all of these candidates, save for Sidious, who he is roughly equal to.