NEW ORLEANS (AP) — A spot in the Kentucky Derby now looks quite possible for Mission Impazible.  The Todd Pletcher-trained colt pulled ahead just past the sixteenth pole to win his first race as a 3-year-old in the $750,000 Louisiana Derby at the Fair Grounds on Saturday. Ridden by Rajiv Maragh and starting from the second post at 7-1 odds, he covered the 1 1/8 mile course in 1:50.32 on a dry and fast track. Pletcher credited Maragh for executing “exactly the trip we were hoping for.””That was kind of the way we had talked about it,” Pletcher said. “We wanted to secure a little bit of position from the inside and hopefully come away stalking the leaders. … Then he was able to find a little more down the lane.”Mission Impazible’s first race of the year was a second-place finish in a six furlong allowance.