Which players are ready to break out of their strong preseason efforts and make a impact in your fantasy league? Read on.Every year during the preseason undrafted and unrated players come from nowhere to become regular contributors to their team. Some players perform so well that they can become regular contributors to your fantasy teams. These are the players that can help you hoist your fantasy Lombardi at the end of the regular season. - Kenbrell Thompkins, WR, New England Patriots: After the NFL draft, players like Aaron Dobson shot up fantasy draft boards but it seems that an undrafted rookie by the name of Kenbrell Thompkins is the new guy for Tom Brady. He continued his fantastic preseason form with an eight-catch, 116-yard game against Detroit. Remember the name. Bilal Powell, RB, New York Jets: Chris Ivory’s deep injury and disrupted offseason has paved the way for Bilal Powell. Powell has come in and looked like a solid RB option in a terrible Jets Offense. Against Jacksonville he had seven carries for 68 yards and he managed a touchdown against the Giants. Powell is listed as the starter on the Jets depth chart and with Ivory’s injury history he is definitely worth a bench spot. Kenny Stills, WR, New Orleans Saints: What do we know about the Saints? They throw the ball A LOT. With Joe Morgan on IR, Kenny Stills has moved up the depth chart and has produced an amazing demo tape for the regular season. In the past two preseason games he has a total of six receptions for 118 yards and two touchdowns and even burned Pro Bowler Jonathon Joseph on a 14-yard touchdown. Stills is a worthy WR4 or WR5 in any league. Knowshon Moreno, RB, Denver Broncos: Montee Ball and Ronnie Hillman are doing their best job to lose their starting positions as the Denver RBs. Hillman can’t hang on to the ball and Ball has dropped some easy passes. Meanwhile Moreno is quietly doing his job and has slipped under the radar. He filled in nicely last year when McGahee was injured and John Fox loves to play veterans. Darrius Heyward-Bey, WR, Indianapolis Colts: DHB was already on my deep sleepers list before the preseason begun, but his play through the preseason only solidifies his status as quality sleeper. DHB has caught seven passes for 75 yards in those two games. DHB finally has an excellent QB and can play to his potential. Vance McDonald, TE, San Francisco 49ers: The 49ers are really missing Michael Crabtree and trying to find a receiver to step up in that role has proven difficult. There appears to be a solution by using Vernon Davis as more mobile TE by lining him up in different positions on the offense. Vance McDonald has seen a lot of preseason action the past two weeks catching six passes for 90 yards. McDonald may not be 'draftable' but keep a close on eye on him. Markus Wheaton, WR, Pittsburgh Steelers: The Steelers coaching staff stated after Wheaton’s breakout game against Kansas City as a better fit for the offence than Mike Wallace. Wheaton in his last two preseason games has totalled six catches for 106 yards and one touchdown. Wheaton has breakout written all over him and as fantasy player who loves Emmanuel Sanders this year Markus Wheaton has me seriously worried about drafting Sanders. Jermichael Finley, TE, Green Bay Packers: Finley let so many owners down last year after an awesome 2011. He was talked up so much as one of the best young tight ends every in football. 2012-13 was highlighted by various dropped passes and terrible routes. This offseason Aaron Rodgers and Packers staff have commended his work ethic. He has backed it up in the preseason with some tough catches. Finley may be back to his best in 2013, hopefully anyway. Colts Defense: Laugh all you want but in the past two weeks the Colts defense has not conceded a touchdown. The first team defense limited the Browns to only four first downs in nearly a half. I like to play defense roulette in fantasy based on matchups and the Colts have Oakland in Week 1, do with that what you like. Terrelle Pyror, QB, Oakland Raiders: Pyror has outplayed Matt Flynn -- as tough as that is -- and has looked dynamic on the ground. In his last game against Chicago he managed 7-of-9 for 93 yards and a touchdown while rushing for 37 yards on four attempts including an incredible 25 yard touchdown run. Mobile QB’s are a hot commodity in fantasy football but he plays for the worst team in the NFL, do with it what you will. - What do you think? Which players do you think will break out after solid preseason performances?