This new IFC series has established its characters firmly, and cleverly, in just a few episodes: Hank Azaria is the burned-out baseball broadcaster with a legendary meltdown behind him and little ahead of him. Amanda Peet is the attention-hungry owner of a minor-league team who hires Azaria’s Brockmire for whatever residual promo value he might generate. And Tyrel Jackson Williams plays one of her employees, a young man who knows nothing about baseball, little about Brockmire, but everything about the Internet. In tonight’s third episode, “Kangaroo Court,” the three of them attempt to mediate a dispute between two of the team’s many splintered factions.