There arent any no-doubt, future All-Stars among the rookie position players who are likely to be on big-league rosters on opening day, but there are a number of hitters who should be Brett Ritchie Women Jersey solid contributors in 2021. Several rookies have already tasted succe s at the major league level and are good bets to continue their production (Randy Arozarena, Ryan Mountcastle, Nick Madrigal, Ke'Bryan Hayes), while others are mature, big-league ready prospects who had their arrivals delayed by the pandemic (Andrew Vaughn, Bobby Bradley, Alex Kirilloff, Taylor Trammell). Fantasy baseball owners need to be familiar with all these potential sleepers, whether they're in redraft leagues or keeper/dynasty leagues.The rankings belowconstitutes an a se sment of 2021 impact and is limited to those players who are likely to open the season in the majors. As such, the bottom of the list includes players who may not have much value in a shallow redraft league. For those leagues, you may want to gamble on a higher-upside prospect in the hope that he gets a midseason promotion. Ive included a half-dozen names to consider for this type of strategy.DOMINATE YOUR DRAFT: For my overall prospect rankings, . For the top rookie pitching prospects, .2021 FANTASY BASEBALL RANKINGS: | | | | | | | | 1. Randy Arozarena, OF, Tampa Bay.Arozarena had an historic post season in 2020 and enters this year with high expectations. Theres no doubt hes an elite talent, but its unlikely hell produce at the level he did last fall. His electric bat speed produces elite exit velocity, and his good balance and direct swing path provide the leverage for his plus all-fields raw power. He destroys fastballs,but hell need to show he can hit breaking balls more consistently. I think '21 will be a season of adjustments for Arozarena, but despite some ups and downs, hes a good bet to hit .270 with 25-plushome runs and 20 stolen bases.2. KeBryan Hayes, 3B, Pittsburgh.Hayes impre sed in a late-season call-up last year (.376 average with five home runs in 85 at-bats) and has continued to rake this spring. Hes in line to open the season as the Pirates starter at third base. Hayes has always had a plus glove, but last season he improved his balance that allowed him to more effectively use his lower half, creating a better bat path and increased bat speed. He was also able to maintain a solid contact rate, which bodes well for his future performance. In 2021, he could hit .275 with 25 home runs while batting in the top third of the Pittsburgh lineup.3. Nick Madrigal, 2B, Chicago White Sox.Madrigal is returning from offseason shoulder surgery but made his Cactus League debut this week and Marc Methot Kids Jersey could be ready for regular playing time shortly after the season begins. Madrigal is already one of the best pure hitters in baseball and performed as advertised in a late-season call-up last year (.340 average in 103 at-bats). When healthy, Madrigal displays elite contact skills and plus speed. He wont hit for any power, but he could compete for a batting title while stealing 20-plusbags per season and playing plus defense at second base.4. Andrew Vaughn, 1B, Chicago White Sox.Vaughn was considered the best hitter in the 2019 draft cla s, anddespite very modest pro experience since then, has impre sed the spring and looks like hell open the season as Chicagos Jason Dickinson Jersey everyday DH. Vaughns hitting skills are as advertised: Compact stroke, above-average all-fields power, and good plate discipline. He still hasnt fully tapped into his power potential, but he could hit .275 with close to 20 HRs and draw plenty of walks in '21. If he can better use his lower body to create leverage and loft in his swing, he has the bat speed to eventually hit 30-plus home runs per year.5. Ryan Mountcastle, OF, Baltimore.Mountcastle played well during his 2020 big-league debut (.333 and five home runs in 126 at-bats) and is projected to open the season in the Baltimore lineup. Mountcastle probably swings at too many pitches, although he doesnt usually chase out of the zone. At the same time, he has great hand-eye coordination and makes contact at a very high rate due to an excellent swing path. His plus bat speed and good balance produce consistent hard contact. He can be a little too much on his front foot sometimes, which saps his power but he has the skills to hit .280 with 15-20 home runs. If he can be more selective and stay back a little more, he could eventually hit for more pop.2021 FANTASY SLEEPERS | | | | | | | 6. Dylan Carlson, OF, St. Louis Esa Lindell Men Jersey .Carlson was initially overmatched in a 2020 big-league call-up but he improved at the tail end of the season and enters the spring favored to win a starting spot in St. Louis. The switch-hitting Carlson has a bit more power batting lefthanded, but he shows good bat speed and excellent hand-eye coordination from both sides. With solid pitch recognition and plus raw power, Carlson has the potential to hit .275 with 20-plushome runs and 10-15 stolen bases over a full season in the bigs. This year, he probably wont reach those numbers, but a .260 average with 15 home runs and 15 stolen bases is po sible.7. Bobby Dalbec, 1B, Boston.Dalbec performed well in a late-season debut last year (.263, eight HRs in only 80 at-bats) and is likely to open 2021 as Bostons starter at first base. Dalbec has plus raw power, but he swings and mi ses (even on pitches in the strike zone) at an elevated rate. He feasts on fastballs, and when he makes solid contact his plus bat speed produces good over-the-fence pop. His steep swing plane means that he wont hit for average, but he could easily hit 20-25 HR over a full season -- just be prepared for a batting average that sits close to the Mendoza Line.8. Bobby Bradley, 1B, Cleveland.Bradley struggled in a short call-up during the 2019 season but enters this spring as the favorite to be Clevelands opening day first baseman. Bradley has a big swing thatproduces big power and big strikeout totals. This year hes improved his swing path and is staying on the ball better. Hes also more agile and athletic at first base. It Curtis McKenzie Jersey s unclear whether he can sustain his current spring succe s, but his offseason adjustments give him some upside. If he cant maintain his newfound swing and improved contact ability, hell probably play part time and put up average power numbers while hitting in the low .200s. If the changes stick, he could hit .260 with 20 HRs.9. Cristian Pache, OF, Atlanta.Pache made a brief big-league debut in late 2020 and quickly showed that he is already one of the best defensive center fielders in the game. This spring hes competing to be the Braves starting center fielder. Although