Gus Malzahn more than doubled his salary and received a contract extension Monday that has given Auburn's offensive coordinator one of the most lucrative deals for an assistant coach in the country.

Malzahn, who had a $500,000 contract, has agreed to a $1.3 million annual contract that is longer than the three-year deal he had been working under.

All of Auburn assistants, as well as head coach Gene Chizik, will receive raises. The raises were approved by the university's compensation committee last week.

Malzahn turned down the head coaching position at Vanderbilt on Monday in a reported deal that was close to $3 million annually with incentives. The Vanderbilt offer came after the compensation committee had approved a "substantial" increase in the pool of money that will be distributed among the coaches, said someone familiar with the process. Athletics Director Jay Jacobs submitted the pay increases to the compensation committee.

Malzahn has produced the most productive offenses in Auburn history this season, and has helped the Tigers to a 13-0 record and a spot in the national championship game against Oregon.

"Gus Malzahn has played a large role in the success of our football program the last two years and we're very pleased to be able to give him a raise and extend his contract," Chizik said in a statement. "In my opinion we have the best staff in the country, and while we want our coaches to strive to become head coaches, retaining them as long as we can is important.

"Gus is a very bright and talented coach and we are looking forward to beginning preparation for the BCS National Championship."

Malzahn won the 2010 Broyles Award as the nation's top assistant coach.

"I'm very appreciative of Coach Chizik and the entire administration for their support," Malzahn said. "My family and I love Auburn and right now my main focus is helping Auburn win a national championship."