What position groups will you be watching tonight?

Kyle Terada-USA TODAY SportsThe third preseason game is usually the most exciting. You can certainly make an argument for the first game, since it's - well - first. After the dull offseason, you get to watch football once again. But, the third game is when the starters get the most time, teams run plays that aren't only vanilla (Chocolate? Strawberry?), and you still get to see guys like Jarryd Hayne and Mike Purcell.

So, just like we have done the last couple of weeks, we are going to rank and discuss our top five position groups we want to watch in anticipation of the San Francisco 49ers preseason matchup with the Denver Broncos. It's easy: just list out five (or as many as you want)…