A man was injured Tuesday morning when he lost control of his pickup on a slick curve and slammed into a tree off Yager Road.The man, John Wayne Jones, 52, was rushed to Saint Thomas River Park Hospital by ambulance after rescue workers spent nearly half an hour freeing him from the twisted wreckage of his vehicle. The accident happened just before 8 a.m. a few hundred yards outside the city limits on Yager Road. According to Highway Patrolman Rodney Whiles, Jones was traveling northbound on Yager, away from the city, when he lost traction on the rain-slick curve and left the roadway.