'Big' is an underwhelming word to describe the last couple weeks for MyRacehorse and their partners. It started Sept. 21 when MGISW Seize the Grey (Arrogate) seized the lead in the GI Pennsylvania Derby and never looked back. In Sunday's co-feature in California, it was second verse, same as the first. Looking every bit the speed of the speed, Straight No Chaser (Speightster--Margarita Friday, by Johannesburg) dominated the GII Santa Anita Sprint Championship in just his second start of the season. The now-5-year-old had not visited a winner's circle since...