But they followed this malperformance up with a spirited 2-0 win over Japan in Columbus, when a 3-4-2-1 system yielded ample scoring chances and some momentum and optimism at last.Fans and observers alike had hoped that this camp, with just two more full international windows to follow in November and March before the US assembles for the World Cup, would offer more definitive insight into Pochettino’s thinking for his first-choice squad.But Pochettino continues to use his roster selections to send messages, as he has since the two-loss debacle at the Concacaf Nations League in March – the last time several erstwhile regulars, like McKennie, were seen in a US jersey.“It’s not because your name is one [thing] or another, you’re going to have a place for sure on the roster for the World Cup,” said Pochettino on Thursday. “That’s an idea that we were fighting in the last year to try to fix. To change the culture.