The Iowa game is a good example. Green had 3 turnovers while Phin had 5. But of those 3 turnovers, I remember 2 of them distinctly since they were very poor alley-oop attempts. His turnovers tend to be more flashy and are therefore more memorable compared to Phin dribbling the ball off his foot out of bounds.He has the best TO percentage of all our guards and by a huge amount. He's at 14%, which is acceptable range for a combo guard.. the rest are 18, and Phin is at 23, which are horrible for guards and especially horrible for a PG.
TO percent should never be over usage regardless of position. DG's is the only one who isn't among our four guards.
He may just have louder TO's or they may be unforced or look worse that others.. but the TO machine this year .. is not him.
That said, in his bad games some of Green's shots are so terrible that they are basically turnovers even though they don't count as such.