The Rafa Play, now playing at the Flea Theater’s new Tribeca home, is a meta comedy about playwright Peter Gil-Sheridan’s imagined romance with professional tennis player Rafael Nadal. Gil-Sheridan, played on-stage by Olli Haaskivi, acknowledges his dual roles as the show’s playwright and lead character from the start with an over-the-top glowing preamble, and the navel-gazing never lets up. I don’t say this to be negative, I say it as a fact. This is a deeply self-involved show.