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5. OF Victor Robles, Washington Nationals (Age: 20)

The precocious Robles hit .352/.445/.507 with 20 extra-base hits and 24 stolen bases in 61 games in his stateside debut in 2015, and he's been one of the game's most promising prospects since.

MLB.com wrote, "From his athleticism to his immense physical tools and his baseball savvy, Robles has the makings of becoming a true franchise player for the Nationals, one who has the upside of a perennial All-Star and possibly an MVP candidate."

After hitting .300/.382/.493 with 55 extra-base hits and 27 stolen bases between High-A and Double-A last year, he has little left to prove at the minor league level.

He'll be instrumental in helping the Nationals deal with the expected departure of Bryce Harper in free agency next winter.

4. OF Eloy Jimenez, Chicago White Sox (Age: 21)

No prospect boasts more raw power than Jimenez.

The headliner of the 2013 international free-agent crop landed a $2.8 million bonus from the Cubs and rose to the top of the organization's prospect ranks before the Cubbies traded him to the South Siders for Jose Quintana last summer.

All told, he hit .312/.379/.568 with 22 doubles, 19 home runs and 65 RBI in 369 plate appearances between High-A and Double-A. He followed that up with a .368/.443/.676 line that included four home runs and 21 RBI in 19 games in the Dominican Winter League.

A starring role on the big league club could come by the second half of the 2018 season.

3. RHP/DH Shohei Ohtani, Los Angeles Angels (Age: 23)

Ohtani is a baseball unicorn with electric stuff on the mound and 70-grade power at the plate.

The Angels were the surprise winners of his highly anticipated posting this offseason, and he immediately slotted into the middle of the big league rotation and in a part-time DH role.

There hasn't been a prospect quite like him since the days of Babe Ruth, and his rookie season will be watched as closely as anyone ever to debut in the big leagues.

At the very least, he has the stuff to make a serious impact in the Angels rotation, even if he struggles to find consistency at the plate with sporadic playing time.

2. OF Vladimir Guerrero Jr., Toronto Blue Jays (Age: 19)

It's not hyperbole to say Vlad Jr. has a chance to be every bit the player his father was.

He played the entire 2017 season at the age of 18 and hit .323/.425/.485 with 28 doubles, 13 home runs and 76 RBI while recording far more walks (76) than strikeouts (62).

MLB.com gave him its first ever 80-grade hit tool, and he also has the raw power to be a perennial threat for 30 home runs once he reaches the majors. He doesn't possess the same athleticism as his father and he'll likely never be a plus defender, but he has superstar potential thanks to his bat.

1. OF Ronald Acuna, Atlanta Braves (Age: 20)

Acuna put together one of the greatest age-19 seasons in pro baseball history last year.

Despite beginning the season with just 40 games played above the rookie ball level, he hit .325/.374/.522 with 60 extra-base hits and 44 stolen bases to reach Triple-A by season's end.

He followed that up with MVP honors in the Arizona Fall League, where he hit .325/.414/.639 with five doubles and seven home runs in 23 games.

The Braves shipped him to the minors to start the season to gain another year of team control, but it won't be long before he's patrolling the outfield and hitting in the middle of the lineup in Atlanta.

All stats courtesy of Baseball Reference and FanGraphs, unless otherwise noted.