The Phoenix Suns lost another great assistant coach as Jarrett Jack is leaving to join Monty Williams for the Pistons coaching staff according to NBA Insider Adrian Wojnarowski.Thank you for reading this post, don’t forget to subscribe! Monty Williams has hired Jarrett Jack as an assistant coach on his Detroit Pistons staff, sources tell ESPN. … Continue reading Jarrett Jack Leaves Suns, Joins Monty Williams on Pistons Coaching Staff