Early in Liverpool's thrashing of Bournemouth, Trent Alexander-Arnold began a move in his own half and powered forwards, twice looking for passes that didn't come.
He ended up in the opposition penalty area without the ball. Later on, he scored a wonderful goal. Then he provided a wicked cross that led to another.
At Old Trafford, Manchester, last week, things had been harder. With Liverpool in retreat, their right back made some poor decisions. He looked uncomfortable and conceded fouls.
Reece James (second from left) should be a starter for England at the 2022 World Cup in Qatar
This is what we know about Alexander-Arnold and this is what makes him so hard to pigeon-hole.