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The Rookie and the Zetas: How the Feds Took Down a Drug Cartel's Horse-Racing Empire

It was a matter of seconds, closer to six than seven, before what was happening became obvious, the colt masked in pink kicking up clouds of red on its way into the lead. It was late November, 2009. This race, the Texas Classic Futurity, was among the last of the year at Lone Star Park, the last chance to watch the 2-year-olds run. The last chance at a payday: $1.1 million up for grabs, a half million to the winning owner.

All eyes were on that horse in pink. The muscular sorrel colt, with a white racing stripe tracing the bridge of its nose, had first edged into the lead several weeks earlier, catching many in the crowd off guard. It had never raced in the United States, let alone placed. But it won that first race, and the next, and the next, and by the time it burst from the gates of the Classic, it was the odds-on favorite.

"Tempting Dash has been invincible!" the announcer bellowed as the horse cruised to the finish line, winning by three lengths and breaking its own track record. "Untouchable!"