In his first campaign at Anfield, Wirtz too often appeared a square peg in a round hole, playing in behind the strikers as well on the flanks, but never flourishing.
In Houston, Wirtz played on the left, perhaps giving Iraola food for thought, especially as Cody Gakpo had a poor season in that position. He created Germany’s opening goal for Felix Nmecha with the sort of delicate touch and quick thinking that eluded him for much of last term.
Wirtz had 39 touches in the final third, instrumental as Germany ran riot.
Former England striker Chris Sutton, in Houston for BBC Radio 5 Live, said: “The mitigation must be that this was Curacao, but the Liverpool fans who watched the game, especially in the first half, would be wondering if it was the same Florian Wirtz who played for them last season.
“He looked happy in a German jersey, at ease and playing with freedom.”
Sutton added: “He was sharp off the left, drifting inside to play quick, incisive passes. He was creative and cunning. He looked unburdened. He was a real menace with Jamal Musiala.”
Iraola will hope to lift the weight off Wirtz’s shoulders at Liverpool.