By Avi Creditor Christian Pulisic served it up for Kai Havertz, as Chelsea clinched a place in the competition’s knockout stage. Handed a rare start for Chelsea, U.S. men’s national team star Christian Pulisic made sure to have a hand in the outcome. Pulisic assisted on Kai Havertz’s spectacular winner in the 2–1 victory, which secured Chelsea’s place in the Champions League knockout stage with one group match to spare. It completed a furious turnaround for Chelsea, which had one point from its first two matches (at Dinamo Zagreb, home vs. Salzburg) before sweeping AC Milan home and away. In S…