Unfamiliar with the ? Well it's about time you get acquainted! The tool is a great a set for those tough roster decisions, whether Demarco Boyd Jersey you're dealing with start/sit conundrums, trade comparisons, or decisions on which players to pick up on the waiver wire, you can benefit by learning the ins and outs of the customizable tool. This week in what we like to call Football Audibles, we take a look at three player comparisons to help you take some of the gue swork out of those mind-boggling roster determinations. Here's a quick primer in the factors that the takes into consideration when analyzing players:Performance:player performance (NFL statistics and points) from the current seasonMatchup:opponent-specific fantasy points against (FPA) data and matchup analysisConsistency:stability of historical player fantasy point productionUpside:potential for significant fantasy point performanceIntangibles:additional factors including injury status, weather, game location, team support and player restBen Roethlisberger vs Andrew LuckFollowing 's four turnover Week 2 meltdown, it's fair for fantasy owners to start pondering other options. , fantasy's QB2 after two weeks, is a very realistic and appealing alternative if you drafted Luck early and scooped up the quarterback a few rounds later during your draft. Through two games, Roethlisberger is averaging 24.35 fantasy points per game compared to Luck's 13.06, and that's sans a couple of Pittsburgh's most dangerous offensive weapons in and . The get Bell back this week and it is common knowledge that he poses a huge threat as a pa s-catcher out of the backfield. Add to it that has shredded opposing defenses for 328 yards and two touchdowns in the first two games, ranking as the top receiver in all of fantasy thus far, and seems like a no-brainer. In terms of matchup though, Luck Donte Starks Jersey has a slight advantage as he faces a defense that has yet to be truly tested, with games against the far from intimidating duo of and thus far. Roethlisberger faces a defense that has allowed just 13.63 FPG to opposing signal callers, but got shredded by Washington's running backs in Week 2.I personally have Ben of Luck for Week 3, and the Player Comparison Tool agrees with my logic. But if you're a Luck owner would you really be able to live with yourself if you bench him? Didn't think so.Chris Ivory vs C.J. AndersonFrom a performance standpoint, Ivory is the clear leader over Anderson through the first two weeks of the season. fans who drafted Anderson with a late first or early second round pick are reeling over the fact that currently has the same amount of fantasy points in standard leagues (7.5). Ivory's yards per carry average is also nearly double that of Anderson (4.4 to 2.3), which is enough to make any Anderson owner jump on the panic button. In fairne s though, Denver has faced two top-11 defenses in terms of FPG against opposing runners.In Week 3, Anderson faces Tarvarus McFadden Jersey a cake matchup against a defense that has allowed three rushing touchdowns and 24.95 FPG to opposing running backs through two games. Detroit is fresh off a game where collected 192 total yards and averaged 4.6 YPC against them. Ivory matches up against an defense that has been much tougher against running backs, with zero rushing touchdowns against and has allowed 14.85 FPG to the position, granted Philadelphia has faced Atlanta and Dallas -- two teams with subpar backfield committees. So based on matchups, Anderson has the upper hand. One more thing worth noting in this comparison is the fact that Ivory has been dealing with a groin injury. He was a signed a questionable tag heading into the ' Week 2 game on Monday night, but was healthy enough to receive 16 touches. Reports following the game noted that coach Todd Bowels . actually finished the game with 18 touches, two more than Ivory, as he piled up some volume in the fourth quarter when the needed to chew clock. Anderson, although ineffective through two games, is fully healthy and will potentially be fighting to keep the starting role in front of a national audience on Sunday Night Football.While the Player Comparison Tool recommends Ivory here, if I'm a fantasy owner with both backs on my team, and have to choose just one to start, I'm sticking with Anderson for one more week.Tyler Eifert vs Travis KelceNow this is a tough call. Just under five fantasy points separate (33.30) from (28.40) as fantasy's TE2 and TE3 through the first two weeks. Thanks to an additional touchdown, Eifert's FPG average is a tick higher than Kelce's (16.65 to 14.2). Both tight ends have Blake Seacat Jersey over 150 receiving yards, and arguments could be made for either of them as the No. 2 pa s-catching options on their respective teams. So since their performance rating is almost dead-even, let's consider their upcoming matchups. Eifert and the face off against a team that has allowed the least fantasy points (1.50) to opposing tight ends in the entire NFL through two weeks. That should jump off the page as a red flag against Eifert, but before you make any decisions, consider who the have faced: Denver, and Oakland. Because the top tight ends on those squads, and Mychael Rivera, are far off the fantasy radar it could be argued that Baltimore hasn't been truly tested against a talented tight end yet.Kelce goes up against the on Monday Night Football. Green Bay's defense let get into the end zone against them in Week 1, which bodes well for Kelce's chances of scoring. When you consider that Kansas City has allowed more FPG to opposing wideouts than any other team through two weeks, you would have to think that the will need to be running a pa s-heavy scheme in Lambeau to Andrew Crow Jersey keep pace with and his receiving corps.When it comes down to it, you really can't go wrong with either tight end in Week 3. But even though the Player Comparison Tool has these tight ends locked in a dead heat, I have to go with Kelce here. He has a better matchup and if coach Andy Reid knows what's best for his offense, he will feed 'Zeus' early and often on Monday night. It's no knock on the talented Eifert, but he has to compete with an elite wide receiver in for targets, which is a hurdle Kelce doesn't face.Matt Franciscovich is an a sociate fantasy editor at NFL.com. Hit him up on Twitter __ fantasy advice all season long.