American sprinter Trayvon Bromell, a 19-year-old who goes to Baylor, had a historic weekend at the USA Track and Field Outdoor Championships. In the prelims he ran the 100 meters in 9.84 seconds. It's the fastest time ever for a teenager and ties for the 2nd-fastest time of 2015. At age 19 Bromell is the 10th-fastest man of all time, and the 4th-fastest American. He went on to finish second to Tyson Gay in the 100m finals at the US Championships, which earned him a spot on the US team at the World Championships in Beijing in August. "I started...