Every Wednesday, The Fantasy Doctor ponders fantasy football dilemmas and prescribes advice with an eye on helping you win. Email your fantasy questions to  fantasydoctor@pfwmedia.com.

Doc,

I'm in a PPR league in which I can start a QB or RB in my flex spot and I was offered a trade: Mikel Leshoure for Joe Flacco. I would get Flacco.

My current QBs are Tom Brady, Jay Cutler and Brandon Weeden.

My current RBs are Adrian Peterson, Doug Martin, Rashad Jennings and Mikel Leshoure.

Any thoughts?

— Sal

My first thought is that when you're in a two-QB format and someone offers you a quarterback, you need to be just a little skeptical. Hey, it's possible the other owner has wonderful QB depth.

Nevertheless, Flacco has been deemed expendable in a format that highly values quarterbacks. 

Why is that? We can't know for certain, but we can make a few guesses. 

For starters, Flacco, while talented, is rather inconsistent. He's better at home than on the road. Moreover, he typically has put up bigger numbers at the beginning of the season than at the end of the campaign. Of note: he never has reached 200 passing yards in four career Week 16 starts (seven TDs, three interceptions in those four games). Week 16, of course, is championship week in a lot of fantasy leagues. The Ravens have a strong ground game, and they gave RB Ray Rice a lot of work late last season.