Every general manager and head coach understands that it takes three seasons to fully evaluate a draft cla s, but that doesn't stop decision makers from counting on rookies to make immediate contributions. Teams will spend the entire offseason evaluating their first-year players in minicamps and organized team activities hoping to find a handful of guys with the potential to crack the rotation on opening day. Of course, those opinions are subject to change when the pads start popping in training camp.Given some time to survey the landscape, I thought I'd identify the five rookie cla ses with the potential to make the biggest impact on their respective teams this fall.5) Baltimore RavensJohn Harbaugh's squad is always in the title hunt, but the will need key contributions from a few rookies to overtake the and in the AFC North. The team desperately needs and to add some pa s-catching oomph to an offensive lineup that lost and continues to wait for the return of (, given his serious hip injury). Caris LeVert Jersey Perriman definitely has the speed and explosivene s to thrive as a big-play specialist, but his suspect hands are a huge concern heading into the season. Williams has all of the tools to blo som into a -caliber player, but typically, it takes time for tight ends to adapt to the pro game. With new coordinator Marc Trestman installing an offensive system that skews toward the pa sing game, the play of the ' young pa s catchers could decide their playoff fate.4) New York JetsThe ' decision to take the "BPA" (best player available) regardle s of position or need could pay huge dividends for the team this season. With due to a violation of the NFL Policy and Program for Substances of Abuse, not only gives the team a suitable replacement in the lineup, but Chris Chiozza Jersey he could match Richardson's disruptive production despite his inexperience. And once all of the pieces are in place up front, Williams could establish himself as a big-time playmaker -- especially under new coach Todd Bowles, whose creativity runs rampant. could become the ' most dangerous playmaker in the pa sing game with his speed and explosivene s. Not only does the Ohio State product supply with a home-run hitter on the outside, but he will open up the field for Gang Green's big-bodied pa s catchers ( and ). In a division where points could be hard to come by, Smith's dynamic deep-ball skills could be the boost the need to compete for the AFC East crown.3) New York GiantsThe are poised to make a playoff push behind an explosive offense that features a dynamic big-play weapon entering Year 2 ( Jr.) and a crafty slot receiver returning from injury (). Given the immense potential of the ' pa sing game, it is imperative for the team to get solid play from at left tackle. Although Flowers is better Kyrie Irving Jersey suited to play on the right side based on his skills and inexperience, an injury to pushed the ma sive rookie over to the blind side, and the need him to play at a high level to keep upright in a division that features several imposing pa s rushers off the edge. Defensively, the are counting on to become a pivotal playmaker between the hashes as the designated "MOF" (middle of the field) enforcer. could join Collins in the deep middle to shore up Big Blue's pa s-coverage woes. 's iffy status could force into the rotation as a situational player. Given Steve Spagnuolo's preference for a deep D-line group, Odighizuwa could be a key component to the ' defensive resurgence.2) Minnesota VikingsMike Zimmer is quietly building a playoff-ready team with the core components needed to make a run down the stretch: franchise quarterback, strong running game and a stingy Garrett Temple Jersey defense. gives the unit a gritty defender with the length and athleticism to challenge receivers at the line. He has shown impre sive versatility working on the outside and in the slot, making him a strong candidate to earn quality minutes as a nickel corner for the . is a compelling "Mike" linebacker with the athleticism, instincts and versatility to stay on the field as a three-down player. He could emerge as the centerpiece of a nasty defense that overwhelms NFC North opponents with its collective speed and athleticism. On offense, and are competing for playing time at right guard. The winner will solidify an offensive line that could pave the way for a 2,000-yard rusher (). Given the potential impact of their rookie cla s, the are poised to make a legitimate playoff run in Zimmer's second season in charge.1) Atlanta FalconsIf the get back into contention this season, it will largely be due to their rookie cla s playing at a high level. gives the the explosive pa DeAndre Jordan Jersey s rusher they've desperately needed since 's departure; he could post double-digit sacks as the "Leo" in Dan Quinn's scheme. is the long, rangy corner the need to contend with the big-bodied receivers (, , and ) who rule the NFC South. is pegged for a complementary role as a rookie, but new offensive coordinator Kyle Shanahan's scheme could showcase his skills as a dynamic, one-cut runner, leading to a number of home-run plays for the . is a crafty route runner with strong hands and ball skills. He could develop into a nice sidekick to and as a part-time slot receiver.Follow Bucky Brooks on Twitter .