Oh, and this is what ESPN has on all 3 guys
Alexander
Positives
Strong, athletic big man
Crazy long wingspan
A terror in the paint
Attacks the rim on both ends of the floor
Explosive leaper
NBA body and strength
Excellent rebounder and shot blocker
Surprising lateral quickness for his size
Great motor
Negatives
A tad undersized for his position
Needs to add a midrange game
Low basketball IQ, plays on instinct
Christmas
Positives
Excellent defensive player
Good rebounder and shot-blocker
NBA body
Runs the floor well
Aggressive defender
Solid passer out of the post
Improved offensive player as a senior
Negatives
Slow developmental curve
Old for his class, turns 24 in December 2015
Holmes
Positives
Long, athletic defender
Good body
Explosive leaper
Excellent shot blocker
Good rebounder
Started to show the makings of a solid perimeter game as a senior
Very high motor
Negatives
A bit undersized for his natural position at center
Still a bit raw offensively
A bit inconsistent