With QB's, if I determine there aren't any health issues that I need to worry about, the first thing I look at is how they match up with the team they are playing.
- Which QB has the better oline vs. dline matchup:
Having a great matchup here can be a blessing and a curse. For example, many teams will stick with the run if they're able to dominate the line of scrimmage, thus limiting your QB's scoring. A bad matchup isn't necessarily a dealbreaker either, as a poor run blocking matchup could mean lots of extra passing, although turnovers are usually more likely as your QB will likely be under extra pressure.
- Which QB has the better wr/te vs. back 7 matchup:
There's no downside here to having a great matchup.
The second thing I look at with QB's is whether they are playing at home or on the road, and what the weather conditions are:
- I operate under the assumption that all things being equal, a QB is more likely to perform better at home than on the road.
- Obviously you want weather conditions that are good for passing the ball
Here's an example of my QB decision making process. In the Super Bowl last year, I had to decide between Big Ben @ STL and Farve vs. CHI. Both matchups were pretty close. I gave a small edge to Big Ben. Farve was at home, but the weather was a potential factor in GB. While Big Ben was on the road, he was playing in a dome so weather wasn't an issue, and I didn't think the Rams crowd would be very boisterous either since they were terrible and the Steelers usually bring a pretty good road following. Since Big Ben had the matchup edge, and I deemed the home/away and weather conditions a wash, I decided to go with Big Ben.