In this continuing series, TDN's Senior Racing Editor Steve Sherack tracks down top horses on the sidelines. Whisper Hill Farm homebred and 'TDN Rising Star' Charge It (c, 3, Tapit--I'll Take Charge, by Indian Charlie), off since posting a jaw-dropping, 23-length victory in the GIII Dwyer S. at Belmont Park July 2, is gearing up for a 4-year-old campaign. Forced to miss intended second-half targets in the GI Runhappy Travers S. and GI Pennsylvania Derby with a foot issue, Charge It has since posted a trio of breezes this winter...