If you're still in the running for a fantasy football championship, chances are you have at least one start 'em, sit 'em question that's keeping you up at night. Fortunately, the experts at RotoBaller are here to help by allowing Sporting News Fantasy readers free acce s to their exclusive Who to Start? advice tool to help with your Week 17 fantasy lineup decisions.How does the Who to Start? tool work? Simple: Choose up to four players to compare below, pick your league settings in the upper right corner (PPR, half-PPR, standard), and push Who to Start? Its that easy. From there, youll get a lineup recommendation based on RotoBallers Mike Piazza Jersey award-winning rankings and projections.MORE: and receive exclusive acce s to their premium lineup tools, DFS cheat sheets, and Team Sync platform! .All that matters is putting out the best lineup po sible for this week. Sure, that's always the case, but early in the year, we often start the players we're "supposed" to, letting name value and where a player was drafted influence our decisions. Take the names out of the equation this week and instead focus on the trends and matchups.As always, RotoBaller factored in usage, matchups, and talent into its Week 17 rankings, and its reflected in its Who to Start? tool. Check out an example from each offensive position.Trevor Lawrence (@ Texans) vs. Tom Brady (vs. Panthers) vs. Brock Purdy (@ Raiders) vs. Aaron Rodgers (vs. Vikings)Brady throws for a lot of yards seemingly every game, while Purdy always manages two TDs. Rodgers has the best matchup of the bunch this week, and Lawrence is playing the best football of his career. It's a tough group of QBs to rank, but RotoBaller likes Lawrence above the rest. Rodgers is just one spot behind, Blake Treinen Jersey while Brady and Purdy sit a few spots back. All of these QBs should be solid this week, but Lawrence has the highest ceiling.MORE: and receive exclusive acce s to their lineup tools, rankings, and analysis..Tyler Allgeier (Cardinals) vs. JK Dobbins (vs. Steelers) vs. Isiah Pacheco (vs. Broncos) vs. Zonovan Knight (@ Seahawks)You never know what you're getting from these RBs in a given week, but RotoBaller likes Allgeier the most thanks to his steady carries and favorable matchup. Knight, who's listed fourth among this group, has the best matchup, but he's struggled the most over the past two games. Dobbins and Pacheco are just a few spots behind Allgeier and should once again produce solid, flex-worthy stats, but it's tough to expect either to have huge games given their matchups and the presence of secondary backs who also garner significant touches. Allgeier has that i sue, too, but he seems to be safely ahead of Cordarrelle Patterson for carries at this point. David Freese Jersey SN's WEEK 17 PPR RANKINGS: | | | | | Jahan Dotson (vs. Browns) vs. Adam Thielen (@ Packers) vs. Michael Pittman Jr. (@ Giants) vs. DJ Chark (vs. Bears)Pittman has the name value, Dotson and Chark have been playing the best over the few weeks, and Thielen always seems to show up in big games, especially against the Packers. RotoBaller likes the surging Dotson the most, ranking him a couple of spots ahead of Pittman and Thielen and well ahead of Chark. The QB change back to Carson Wentz shouldn't affect Dotson much, as he Cody Bellinger Jersey excelled early in the season with Wentz under center. Pittman could still see the most targets among this group, but in a tough matchup with a volatile QB situation of his own, he's much tougher to trust than usual.SN's WEEK 17 STANDARD RANKINGS: | | | | | Tyler Higbee (@ Chargers) vs. Mark Andrews (vs. Steelers) vs. Evan Engram (@ Texans)Engram and Higbee are on absolute heaters right now, but could you really start them over Andrews? RotoBaller suggests you should stick with Andrews, ranking him one spot ahead of Higbee and two spots ahead of Engram. None have particularly favorable matchups, so it really comes down to how much you trust the targets and the scoring opportunities. Based solely on that, Andrews might be third on this list if Tyler Huntley remains under center, but if Lamar Jackson (knee) is back, Andrews' outlook gets a lot Don Sutton Jersey better. Either way, all three TEs are better options than any potential streamers.MORE: and receive exclusive acce s to their premium lineup tools, DFS cheat sheets, and Team Sync platform! .Try out any combination of players including players at different positions for your flex spot with the RotoBaller "Who to Draft?" tool above. Its like having your own fantasy football expert on call just to help with your specific Week 17 lineup questions.