Change is to be expected in any superstar athlete’s career. But the change U.S. men’s national team captain Christian Pulisic has embraced in the prime of his career might go beyond expectations.

Christian Pulisic did it all for AC Milan in their comeback 3-2 win over Lecce in Serie A competition on Saturday. He scored twice in a 10-minute span, once in the 73rd minute on a penalty kick to tie ...