PARIS (AP) — With Neymar and Edinson Cavani fluffing their chances, unheralded left back Layvin Kurzawa starred with a second-half hat trick as Paris Saint-Germain routed Anderlecht 5-0 to reach the Champions League knockout stage on Tuesday. Although Neymar scored a fine goal to put PSG 2-0 up just before halftime, the Brazil forward was otherwise largely erratic against a weak side that had lost the corresponding match 4-0 at home. Cavani, PSG’s top scorer last season with 49 goals and 15 so far this term, wasted his best chance from a first-half header, got the ball trapped between his legs on one occasion and then saw another shot blocked. Kurzawa had three chances and took each with aplomb, showing the scoring instincts he once had as a striker in his junior days before converting to defense. “This hat trick gives me a huge amount of pleasure; it’s the first of my professional career,” Kurzawa said. “I was surprised because I’m a defender. I’ve scored goals before, but three is a lot.” PSG, which is unbeaten this season, squandered five clear scoring opportunities before Marco Verratti opened the scoring in the 30th minute with a well-taken effort. Neymar, after fluffing…