The Suburban on Saturday at Belmont Park could help define the leaders in a depleted older male division with one champion (Shared Belief) on the sidelines and two others (California Chrome and Main Sequence) focused on turf.

Last year's Belmont Stakes winner Tonalist figures a big favorite in the Suburban stretching out off his runner-up finish to Honor Code in the Met Mile. Some have said he is the biggest threat to American Pharoah this year, and this race will go a long way toward forming that opinion