After Devin Booker went down with an injury against Utah, it left Josh Jackson as the highest scoring healthy member of the Phoenix Suns. This is not to say that Jackson has had some sort of incredible year, because he has not, but it does illustrate the opportunity in front of him and others for the last few games.
The player who can change his value the most these final games is Jackson, because his skill set and play style can allow him to take over a game, for better or for worse. With Mikal Bridges and Kelly Oubre Jr.