Saturday’s series opener against the Warriors marked the first playoff appearance for the re-branded New Orleans Pelicans and star forward Anthony Davis — and it showed. Despite coach Monty Williams stressing the need for a fast start, New Orleans scored a season-low 13 points in the first quarter, missed 11 consecutive shots, and trailed by 15 at the end of the period. “A little butterflies,” admitted Davis, who overcame a tentative first half, thanks largely to the defensive tandem of Draymond Green and Andrew Bogut, to finish with 35 points and seven rebounds. The good news: the Pelicans indeed settled down, feeding the ball more to Davis at the elbow and letting the rangy forward work his regular-season magic. The bad news: already nursing Jrue Holiday back to health, the Pelicans may have lost another guard. Stepping up is nothing new for the Pelicans, who had to win eight of their last 12 games — including the regular-season finale against San Antonio — to claim the final playoff spot in the Western Conference. [...] Oracle Arena has been a bit of a horror show for the Pelicans, who lost twice in Oakland during the regular season — a 112-85 drubbing Dec.