DENVER -

Marijuana advocates are trying to grab some attention from the NFL's season opening game in Denver.

The Marijuana Policy Project wants the league to stop punishing players for using marijuana. It's put up a billboard near Sports Authority Field at Mile High for Thursday night's Denver Broncos-Baltimore Ravens game.
    
The sign asks the NFL to "stop driving players to drink." Marijuana supporters have long insisted that drinking poses a bigger danger than pot.
    
Denver's All-Pro linebacker Von Miller will miss Thursday's game and five others for violating the league's substance abuse policy. The reasons are confidential. But The Denver Post has reported that Miller tested positive for marijuana and amphetamine use during his rookie season in 2011.