OMG 

 my Axew is a monster, it caught up to the rest of the team very fast 
 

Lvl. 36

Lvl. 41

Lvl. 42

Lvl.41

Lvl.40

Lvl.39
and Sam is still lagging behind the others 

 , I need a way to train him quickly 
 
EDIT: this is the only pokemon game I've played where my starter is falling behind my team, when I played Emerald and Diamond, My Swampert and Empoleon were ahead or in par with the rest of the team 
 
 