The preseason is where position battles are won and lost, so now that we Brian McCann Jersey have a few games to analyze, we have a better idea of how some running back-by-committee (RBBC) backfields are shaping up. Sure, it's easy to overreact to just one preseason game, but real game action gives us some insight on how coaches plan to use certain guys that have been question marks so far during camp, and how big of a role some of the higher-profile rookies might play come the regular season.New Orleans Saints: Things may be changing in New Orleans after ran for 83 yards and a touchdown on eight carries against the Friday, and second-year back Khiry Robinson scored on a short touchdown run of his own. While Ingram's 10.4 yards per carry obviously won't hold up for any extended amount of time, it's a good start for a running back who has struggled to make a significant impact the past few seasons. Pierre Thomas has slid to the on the depth chart and didn't travel to St. Louis for the game due to an undisclosed injury. It's only one game, but Ingram's production in this one is hard to ignore. Atlanta Braves Jersey Thomas is still the best receiving back in New Orleans so it would make sense if he plays more of a third-down pa s-catching role while Ingram and Robinson split carries on earlier downs. Call me a broken record, but in case you haven't heard, the RBBC situation in New Orleans is one to avoid for fantasy purposes if you can work around it. Houston Texans: There's been a surprising shake up on the depth chart this week following the team's embarra sing 32-0 lo s in their first preseason game. The cut Brown after he didn't play a snap in the game. Jonathan Grimes and rookie had moved ahead of him on the depth chart and ' coach Bill O'Brien said Brown was in a "" to get more playing time. The also cut back Dennis Johnson and Tim Cornett Monday, then quickly signed 32-year-old veteran Ronnie Brown and William Powell to fill the empty roster spots. At his age, it's hard to see Brown having a prominent role in the ' backfield while Grimes projects to be in the battle for the No. 2 role. This is definitely a backfield to keep an eye on in the remaining preseason games. Arian Foster is dealing with several injuries this preseason (hamstring, back), so it's extremely important to pay attention to what's going on behind him. Tampa Bay Buccaneers: A clear battle is underway behind in Tampa Bay with three talented backs fighting for reps. After Martin had his three carries for a measly six yards, Bobby Rainey, rookie and Mike James all got their opportunities. Sims seemed to really capitalize on his chances in the pa sing game as he caught three balls for 32 yards. Rainey served as the No. 2 back behind Martin and had six carries for 25 yards while James' big play came on one 20-yard catch. Similar to the situation in New Orleans, this backfield could shape up with Martin and Rainey splitting carries on the early downs with Sims potentially developing into a third-down pa s-catching specialist. As fellow NFL.com fantasy editor Alex Gelhar , Sims is currently going undrafted in NFL.com fantasy leagues but if he continues to play like he did on Friday, his stock could rise significantly by the end of the preseason. The big rookie also Josh Tomlin Jersey has a chance to earn the No. 2 spot if he can outplay Rainey in the Bucs remaining three preseason games. If that happens, he could be one of the most undervalued backs in fantasy this season. Martin has a reputation for slow starts, and if the new coaching regime in Tampa Bay grows impatient with him early in the regular season it's not out of the question for them to look into testing their other options. San Francisco 49ers: We knew wouldn't play in the preseason opener so that came as no surprise. What did surprise us is rookie played, gaining 39 yards on five carries in the first quarter. What looked like a stacked committee behind Gore at the beginning of camp has dwindled due to injuries, and now Hyde looks like the favorite to serve as Gore's handcuff. The veteran's current ADP in NFL.com fantasy drafts is Round 6 while Hyde's is Round 15, so owners who reluctantly draft Gore will have a chance to scoop up the rookie late as a Darren O Day Jersey viable safety net should anything happen to The Inconvenient Truth. Hyde will continue to get reps with the first-team offense so we'll be watching to see what he does with his increased opportunities. Second-year back Jewel Hampton also saw playing time throughout the first three quarters against Baltimore on Thursday and had 18 yards on eight carries, but until we see more, Hyde is definitely the guy to target. Baltimore Ravens: The were impre sive on the ground with Ray Rice, Bernard Pierce, Justin Forsett and Lorenzo Taliaferro all getting significant work against the . Pierce was the only Baltimore back to score on a short touchdown run, but both he and Rice (who only had three carries) seemed to run the ball Tom Glavine Jersey well with the opportunities they had early on. Pierce had 10 carries and is projected to be the team's starter for the first two regular season games while Rice is suspended. Taliaferro did well in mop-up duty gaining 73 yards on 13 carries throughout the third and fourth quarters and could surpa s Forsett on the depth chart if he continues to play well. Still, it's tough to imagine any running backs other than Pierce and Rice being fantasy relevant in Baltimore this season. Matt Franciscovich is an a sociate fantasy editor at NFL.com. You can follow him on Twitter at __