Montee Ball has said that he is still working on eliminating fumbles from his game.

The Denver Broncos running back recorded his second fumble of the season during the team's 37-21 win over the Oakland Raiders earlier this week.

The rookie told the Broncos' website: "Once again the coaches trusted me and put me in there and I kind of shot myself in the foot again. But today we worked on it, me and my coach. It's ball security. We corrected the problem. I carried the ball all around the facility today.

"Nobody feels worse about the fumble than me, so when it happened and after the game, they didn't say much at all. They just told me to keep my head up. I'm still learning. It's best to happen now than later on in the season. Get it out of my system.

"For the most part, last week's game was good. I'm a lot more comfortable back there. A lot more comfortable. The game has slowed down a lot. I'm finally just running."

The Broncos play the Philadelphia Eagles on Sunday.