Miller will undergo a radiofrequency ablation of the facet joints, which the Phillies termed a "minimally invasive procedure."

GM Preston Mattingly said the club is optimistic Miller (back) will play in games this year, but he has not resumed baseball activities.

The Philadelphia Phillies have experienced some struggles in their lineup this season that, in an ideal world, top prospect Aidan Miller would have been able to

Miller will undergo a radiofrequency ablation of the facet joints, which the Phillies termed a "minimally invasive procedure."