DALLAS — Pau Gasol went into the game needing 14 points to reach 13,000 for his career. He got 17 in the first half tonight against the Dallas Mavericks, making 8 of 12 shots. It was easy pickings for Gasol and Andrew Bynum (eight points, five rebounds) after Dallas center Tyson Chandler left the game because of an illness that sidelined him the last two games.