The San Francisco 49ers (0-1) and Denver Broncos (1-0) play in the first game at Levi’s Stadium on Sunday at 4 p.m. ET. Three things to watch: The defense: 49ers coach Jim Harbaugh said his unit was “pushed around” last week at Baltimore. The 49ers started the game without seven starters. That essentially put the 49ers in a hole for the entire game. They were basically playing a unit behind the entire game. That may not change much this week.via - NFL Nation