Leszek (Shek) Borkowski

I am very leery of coaches who liberally use words ‘great’ or ‘phenomenal’ to describe players and or performances.
These adjectives should only be used in only the rarest of circumstances.
I have never seen a great youth, high school or college player, only players with good potential. If they were great or phenomenal, chances are high they would have professional contracts. Pele, Maradona were great. There are no great 15-year olds. Peter the Great wasn’t great at 15 and neither was Messi.
Your team may have had a good, very good or very productive training session. It is unlikely that it was great. Some of Barcelona’s match performances are great.
Its unlikely that your U15 team can match or exceed it.