Looking to match the record of baseball great Bert Campaneris (and to amiably screw around for an hour), Will Ferrell sets out to play all nine positions for ten different, very obliging major league teams in a single spring training day. If the concept of Ferrell pulling the legendary “conceptual comedy Plimpton” isn’t enough to amuse you, then the fact that all proceeds of this HBO special are going to fight cancer might earn a few charitable laughs. But, considering how Ferrell’s commitment to oddball projects has paid off over the years, you can probably count on laughing for real and donating your unused pity laughs to the cause. Erik Adams is oiling up his baseball glove for the review. Also his comedy glove. You have to oil those.