“It’s OK if they come for a cross and miss it,” one senior goalkeeper coach says. Young backups train more than the starter, get faster feedback, and spend the week rehearsing the match decisions he gets from the match itself.

Jack Robinson, now U.S. Soccer’s Head of Goalkeeping after six seasons on Liverpool’s first-team staff, made the point in an FA interview. The order he set there matters: attitude first, then technique, then positioning. The miss has to be tolerable in practice, or the bravery never shows up in a match. That isn’t the same as saying the miss is good — Robinson is clear it isn’t — but the alternative is a young keeper who learns to protect himself. He stays on his line. He avoids the mistake. He keeps the session clean, and arrives in the senior dressing room having never tested the part of his game that matters most.