DENVER (AP) — The Denver Broncos got a taste Saturday of what their season opener will be like when they scrimmaged at an empty Empower Field with crowd noise piped in.

"Yeah, it was really weird, without a doubt," quarterback Drew Lock said. "It sounds like there's fans here and you look up and there's no one behind anyone on the sideline."

The Broncos cranked up the noise when their starting offensive and defensive units were squaring off, so there was one time when Lock had to cover the ear holes on his helmet to hear the play call, just like he has to at Arrowhead Stadium.

"We'd rather hav...