I have to believe that there is a streaks component.
Like you i had a guy lighting it up all the first part of the season, entered the All-Star break clearly No.1, won the 3pt Shootout, then got a 1 week injury and never could hit a shot after that pretty much the rest of the season and cost me games while I stuck with him hoping he would come good, i sold him to a lower level team in another country and he is back firing away like a demon.
Thierry Rousseau (9439085) Ranks #2(World) in PTS / game