Shaunae Miller took the 400 meters by .07 seconds
                                
                                
                                    (Newser) -
                                    It took a head-first dive by Shaunae Miller at the finish line to beat Allyson Felix, denying her a record fifth Olympic gold medal. Miller, the 22-year-old from the Bahamas, stayed even with Felix for 398 meters, then sprawled, dove, and crashed across the line to edge Felix by .07...