There's nothing about Ricky Robertson that screams, "Olympic athlete."
At a lean 5-foot-10, he's not as tall as a basketball player. He doesn't have the bulk of a shot putter or a swimmer's V-shaped physique.
Yet Robertson, who lives and trains at the Olympic Training Center in Chula Vista and works a part-time job in El Cajon to help support his quest, is one of the most explosive athletes on the U.S. Olympic team that will compete in Rio de Janeiro this month.
The high jumper - who is several inches shorter than most elite jumpers - has cleared the bar at 7-foot-6. In most every meet he enters, Robertson is the one who looks destined...