Before Brooke Lloyd ever stepped onto a starting block, elite track and field was already part of her life. Her father, Chris Lloyd, competed in the 2008 Olympics, and her mother, Tremedia Lloyd, won an NCAA Division I 200-meter championship at Texas Southern University. Excellence wasn’t something Brooke admired from afar; it was the standard she grew up with. Now, after completing her senior season at Humble Summer Creek, Brooke is headed to …