Eric Reed, the trainer of Rich Strike, the horse who improbably won the Kentucky Derby as an 80-1 long shot, was asked about a derogatory tweet he was alleged to have sent about Vice President Kamala Harris. In January, Sebastian Gorka, a former advisor to President Trump, asked, “So what exactly are Kamala’s qualifications?” An account whose handle is @daddyrabbit1964 and went by the name of Eric Reed responded, “Heard she’s good on her knees!!” Reed appeared on ESPN’s “Outside the Lines” on Wednesday, and John Barr asked him if he sent that tweet. “I haven’t seen anything about it,”...