So, here we are, again — Mavericks, Spurs, Dirk, Duncan, etc. It’s almost like it isn’t the playoffs without it. Things kick off Sunday night at the American Airlines Center. I’ll be there, in Section 319, with “MA” painted on my chest. (Eric Celeste — remember him? — is tentatively scheduled to provide the “VS.”) Comments have been helpfully turned on for your predictions. Mine? Mavs in three. (Impromptu rule change — long story.) Also, keep an eye on Rob Mahoney’s great The Two Man Game blog, where yrs truly will be participating in a little Mavs roundtable in the coming days.