Owners are starting to pore over MLB rosters hoping to create the best 2021 Fantasy baseball rankings possible. The coronavirus-shortened 2020 MLB season still resulted in several Fantasy baseball sleepers, players who have a strong chance to exceed expectations and become league-winning stars. Players like Pirates starting pitcher JT Brubaker, who induces an impressive number of ground balls, could offer excellent value, but where does he belong in your 2021 Fantasy baseball pitcher rankings?

At age 27, Brubaker is one of many young players who stood out during the shortened 2020 season, but should he be among your 2021 Fantasy baseball picks? And which 2021 Fantasy baseball sleepers should you target? Before you go on the clock, check out the 2021 Fantasy baseball cheat sheets and rankings from the proven computer model at SportsLine.

Last season, SportsLine's Projection Model identified several top Fantasy baseball sleepers, including Dodgers catcher Will Smith. The 25-year-old was No. 6 catcher in Fantasy baseball last year, outperforming Yasmani Grandal, Mitch Garver and Gary Sanches, who were all drafted well ahead of him on average. Smith wound up hitting eight home runs with 25 RBIs and posting a .980 OPS that was over 70 points better than in his breakout season in 2019.

The team at SportsLine was all over Smith as a Fantasy sleeper from the start. Their model had him listed much higher than expert consensus rankings, and anyone who listened to their advice was well positioned for a league title. 

Their model is powered by the same people who powered projections for all three major Fantasy sites. And that same group is sharing its 2021 Fantasy baseball rankings and cheat sheets over at SportsLine, helping you find Fantasy baseball sleepers, breakouts and busts long before your competition. Their cheat sheets, available for leagues on many major sites, are updated multiple times every day. Any time an injury occurs or there's a change on a depth chart, the team at SportsLine updates its Fantasy baseball cheat sheets.

In fact, when it came to ranking players in Fantasy football, SportsLine's Projection Model beat human experts last season when there were big differences in ranking. And the model was the closest to the hole overall, meaning it best pinpointed where every player would finish each week. That could literally be the difference between winning your league or going home empty-handed.

Now, the model has simulated the entire 2021 MLB schedule 10,000 times and revealed its top 2021 Fantasy baseball sleepers, breakouts, and busts. You can get its Fantasy baseball cheat sheets 2021 here.

Top 2021 Fantasy baseball sleepers

One of the 2021 Fantasy baseball sleepers the model is all over: Dodgers third baseman Edwin Rios. The 26-year-old hit .250 with eight home runs, 17 RBIs and 13 runs scored in 32 games during the 2020 season as a backup to Justin Turner.

Rios was among the best in the game with a line drive rate of 39 percent, which was seventh-best in baseball and tied with National League MVP Freddie Freeman. There are also reports that Rios could see time at third base. SportsLine's model loves Rios' upside even with Turner's return, ranking him solidly in the top 15 at shortstop, despite a 2021 Fantasy baseball ADP of 204.

Another sleeper that SportsLine's Fantasy baseball rankings 2021 are extremely high on: Mariners left fielder Dylan Moore. The 28-year-old delivered relatively tepid numbers when he was a rookie in 2019, slashing .206/.302/.389 over 282 plate appearances. However, he belted nine home runs and swiped 11 bags.

Last season, Moore turned in a .255/.358/.496 slash line with eight home runs and nine stolen bases over 38 games. SportsLine's model says he'll build on those gains in 2021. It ranks him ahead of players like Eloy Jimenez and Austin Meadows, who are going at least four rounds earlier than Moore on average.

How to find proven 2021 Fantasy baseball rankings

SportsLine is also high on a first baseman with a Fantasy baseball ADP 2021 barely inside the top 10 who finishes ahead of studs like defending AL MVP Jose Abreu and Yankees first baseman Luke Voit. This pick could be the difference in winning your league or going home with nothing. You can see who it is here.

So which 2021 Fantasy baseball sleepers should you snatch in your draft? And which undervalued first baseman can help you win a championship? Visit SportsLine now to get Fantasy baseball rankings for every single position, all from the model that called Will Smith's huge breakout last season, and find out.