Start 'Em & Sit 'Em is the ultimate look at the weekly NFL matchups and how they'll affect your team. Sleeper alert features an under-the-radar player who could produce good numbers. Owners beware features a regular fantasy starter who could fail to meet expectations based on the strength of his opponent. Obvious fantasy starters like and will not be featured. For your final lineup decisions, check our .Start of the week vs. : If you haven't noticed, the defense projects to be absolutely dreadful this season ... and that's after a 2013 campaign that saw fantasy players feast on it on a regular basis. With question marks along the defensive line, at linebacker and in the secondary, Kaepernick and the Niners should be able to pick apart Dallas at will. I'm expecting a very high-scoring affair at the Jerry Dome.Start 'em vs. : What a matchup on Sunday night! and the go up against his old team, the , in what should be a barn burner. I know the made some great additions in the offseason on defense, but you can't tell me Luck isn't going to be motivated to produce against the future r. With a questionable line and running game, I like Luck to throw it a ton. vs. : Foles wasn't overly spectacular during the preseason, and I doubt he'll be as good this season as he was in 2013. However, he's still a top-10 fantasy quarterback with a great matchup against the in the opener. Last season, Jacksonville surrendered an average of better than 19 fantasy points per game to quarterbacks ... that's right around what Foles averaged as a starter under coach . vs. Dick LeBeau Jersey : The aren't going to win a lot of football games this season, but this team could be a boon in . New pa sing game coordinator and play-caller likes to throw the rock, and Romo will likely have to throw it a lot if his defense is as bad as we project it to be in 2013. Also keep in mind that this Niners defense is a shell of its former self, so Romo will be in a position to score fantasy points.Sleeper alert - vs. : If you're in a two-quarterback league or your signal-callers are a serious me s in a deeper league, Smith will be worth a roll of the dice this weekend. He flashed at the end of last season, finishing among the top 10 field generals based on fantasy points over the last five weeks. His succe s should continue against Oakland, which allowed the third-most fantasy points to quarterbacks in 2013.Sit of the week vs. : Rivers has been one of the better draft bargains in this season, but can you start him in a tough road matchup in Arizona? I think he's a risk, as the allowed an average of 254 pa sing yards and 16 fantasy points per game to opposing signal-callers in 2013. Unle s you're really stuck at the position and don't have another option, Rivers isn't an attractive starter.Sit 'em vs. : Dalton was one of the top five quarterbacks in last season, but can he duplicate that level of succe s in 2014? It's not likely, especially in the run-based scheme of new offensive coordinator . Dalton has also not had a lot of succe s against the , throwing for multiple touchdowns (six total) in just two of his six career starts against them. That's not a positive trend. vs. : Smith ranked among the 15 best quarterbacks in fantasy land a year ago, but he was one of the most inconsistent players at his position as well. He'll open the 2014 campaign at home against the , who had one of the toughest pa s defenses in the NFL last season. In fact, their defense surrendered just 15 touchdown pa ses and the third-fewest fantasy points (13.33 PPG) to quarterbacks. vs. : Did you watch Manning during the preseason? If you did, you know the reason I would avoid him at all costs in Week 1. He completed a mere 48.8 percent of his 41 pa s attempts, and didn't look comfortable at all in new offensive coordinator Ben McAdoo's system. The also have a fierce pa s rush and were tough on fantasy quarterbacks a season ago, making Manning even le s attractive acro s the board.Owners beware - vs. : Newton has been a top-four fantasy quarterback in each of his first three seasons, and it's tough to bench him if you don't have a solid alternative at the position. Coming off ankle surgery and playing with a fractured rib, however, the veteran has thrown just three touchdown pa ses with two interceptions in his last two starts in Tampa Bay. At best, consider Newton a low-end QB1 this week.Michael Fabiano is an award-winning analyst on NFL.com and NFL Network and a member of the Sports Writers A sociation (FSWA) . Have a burning question on anything fantasy related? Tweet it to __ or send a question via ! DeShon Elliott Jersey