One-on-one is the type of hockey you see at younger ages. Generally speaking, the players that are stronger early prey on the weaker competition.
As the pyramid quickly forms and these players are grouped together, it becomes harder and harder to beat players 1v1. This competitive advantage starts to disappear, which is intuitive. After all, it’s rare to see 1v1s work in the offensive player’s advantage at the NHL level.
Yet, you’ll see plenty of youth coaches working on 1v1s at practice.
Then, as puberty starts to take hold of the players’ bodies, the differences in power allow another window where players can have great advantages and successes with 1v1 hockey.
Again, as everyone catches up… success rates decrease again.
Many players continue to play this way due to early success with 1v1s but ultimately stall in their development.