sentences:  Invasor, an Argentinian-bred four-year-old who had won three Grade I stakes in the U.S. in 2006, was the surprise winner, beating out the heavily favored Bernardini in the stretch.It was the first Classic win for Invasor's owner, trainer and jockey.The Classic is run on dirt at one mile and one-quarter (approximately 2000 m) with a purse in 2006 of $5,000,000, increased from $4,000,000 in 2005.