Hornets coach Monty Williams has agreed to a four-year contract extension that would keep him in New Orleans through 2016.The deal announced by the club Sunday morning comes as the 40-year-old Williams heads into the final year of the contract he received when he took his first NBA head coaching job in New Orleans in 2010.The Hornets did not release contract terms, but Williams confirmed the length of the extension in a text message to The Associated Press. Source: ESPN