1 innings in the Oakland Athletics system last season.The 21-year-old advanced as high as Triple-A and could soon be toiling in Oakland's rotation http://www.rockiesfanproshop.com/authentic-chad-bettis-jersey , especially if he perfects a curveball that augments his high-90s fastball and plus changeup.The small-market A's are never afraid to promote, and Luzardo is a prime candidate.No. 9: OF Jo Adell, Los Angeles Angels4 of 12Patrick McDermott/Getty ImagesThe Los Angeles Angels have worked to rebuild a once-moribund farm system. Their crown jewel? Jo Adell.In 99 games between Single-A, High-A and Double-A, Adell hit .290 with 20 home runs and 15 stolen bases and flashed the defensive instincts and arm strength of a legitimate MLB right fielder.If Mike Trout exits Anaheim via free agency following the 2020 season, Adell could be the heir apparent.No. 8: INF Brendan Rodgers, Colorado Rockies5 of 12David Zalubowski/Associated PressBrendan Rodgers cracked 17 homers with an .835 OPS in 95 games at Double-A last season and advanced to Triple-A.He doesn't have much left to prove for a Colorado Rockies franchise that could use help in the middle infield.Whether he profiles as a shortstop or second baseman or slots at third base in the event Nolan Arenado bails via free agency after the 2019 season, Rodgers has many paths to the big leagues in the not-too-distant future.No. 7: RHP Forrest Whitley, Houston Astros6 of 12Christian Petersen/Getty ImagesYou could make an argument for outfielder Kyle Tucker as the Houston Astros' top prospect. But it's tough to make an argument against right-hander Forrest Whitley.The 21-year-old hit a bump in the road with a 50-game performance-enhancing drug suspension, but he returned to strike out 34 hitters in 26.1 innings at Double-A while flashing a high-90s fastball, bat-missing curveball, power slider and plus changeup befitting an emerging ace.If the PED noise is permanently relegated to the rearview, Whitley could soon be the Astros' resident stud.No. 6: SS Royce Lewis, Minnesota Twins7 of 12Brace Hemmelgarn/Getty ImagesA consummate athlete, Royce Lewis hit .292 with an .803 OPS between Single-A and High-A last season. That's especially impressive when you consider the Minnesota Twins prospect won't turn 20 years old until June.Lewis' power should progress as he ages, and he's got the range Adam Ottavino Jersey , hands and arm to remain at shortstop or transition to center field.Either way, the Twinkies have a versatile future star in their system.No. 5: 3B Nick Senzel, Cincinnati Reds8 of 12Rob Tringali/Getty ImagesNick Senzel is on the doorstep of MLB stardom. The 23-year-old hit .310 with an .887 OPS at Triple-A before a fractured right index finger ended his season.Freak injury aside, Senzel is a polished hitter with all the tools to succeed at the highest level.He's presently blocked on the Reds' infield depth chart by second baseman Scooter Gennett and third baseman Eugenio Suarez. But as soon as a trade or injury opens a spot, expect Senzel to carve his role in The Show and stay there.No. 4: OF Victor Robles, Washington Nationals9 of 12Manuel Balce Ceneta/Associated PressThe Washington Nationals may soon wave goodbye to the Bryce Harper era, assuming the franchise icon signs with another club.If so, the Nats can pivot to up-and-coming talent, including outfielders Juan Soto and Victor Robles.Soto exceeded his rookie limits in 2018, but Robles is technically a prospect.An elbow injury slowed Robles last season. But the 21-year-old finished with 13 extra-base hits and 19 stolen bases in 52 minor league contests before hitting .288 in 21 MLB games, and he boasts the explosive speed and defensive prowess to play a superlative center field.No. 3: OF Eloy Jimenez, Chicago White Sox10 of 12Ron Vesely/Getty ImagesEloy Jimenez hit .317 with a .925 OPS in 53 games at Double-A last season, then hit .355 with a .996 OPS in 55 games at Triple-A.Add it up, and you've got the makings of an MLB breakout.Jimenez is average at best defensively and projects as an adequate left fielder or designated hitter. But his hit tool is good enough to outweigh those factors, especially for an American League club.He's 22 years old and displayed game-changing pop in the upper minors. What more do the rebuilding Chicago White Sox need to hear?No. 2: SS Fernando Tatis Jr., San Diego Padres11 of 12Andy Hayt/Getty ImagesFernando Tatis Jr. slashed .286/.355/.507 with 22 doubles Pat Valaika Jersey , 16 home runs and 16 steals as a 19-year-old at Double-A.He won't begin the 2019 season as a member of the San Diego Padres, but the Friars can't keep him down for long.Given his height (6'3") and prodigious arm strength, Tatis could ultimately slide to third base. Then again, considering his range and athletic ability, he could be an oversized shortstop in the Carlos Correa mold.Either way, the Pads should be licking their chops.No. 1: 3B Vladimir Guerrero Jr., Toronto Blue Jays12 of 12Christian Petersen/Getty ImagesLike Tatis, Vladimir Guerrero Jr. is a second-generation star streaking across the MLB firmament.The son of Vlad rose from the rookie leagues to Triple-A in 2018 and combined for a .381 average and 1.073 OPS at the age of 19.He's got the bat speed and pure strength of his dad, and he could be a 40-homer force for the rebuilding Toronto Blue Jays in the near term.At the least, Guerrero should make his MLB debut in 2019. Here's betting he'll swing it well enough to stay around for the long haul. All statistics courtesy of Baseball Reference. The Cleveland Indians have exercised pitcher Carlos Carrasco's $9.75 million team option for the 2019 season, according to MLB.com's Jordan Bastian.The club confirmed the news.Per Bastian, the club also declined outfielder Brandon Guyer's $3 million option, instead paying a $250,000 buyout. The 32-year-old will become an unrestricted free agent.Carrasco has turned into one of baseball's best bargains since he signed afour-year, $22 million extensionin April 2015. In those four seasons, the right-hander has gone 60-36 with a 3.40 ERA in 119 games. He has thrown 183-plus innings in three of the past four years Daniel Castro Jersey , including 200 in 2017.The 31-year-old went 17-10 with a 3.38 ERA and a 1.13 WHIP in 32 games (30 starts), striking out a career-high 231 in 192 innings. He posted a 2.52 ERA in 14 games (13 starts) after the All-Star break.Not only has he had regular-season success, but he has also shown up on the big stage. He has allowed just two runs in 11 innings over two postseason starts, including a 2017 outing in which he shut out the New York Yankees for 5.2 frames while allowing just three hits and striking out seven.Carrasco's emergence has given Cleveland one of the best rotations in baseball. Headlined by Carrasco, two-time American League Cy Young Award winner Corey Kluber and 2018 AL All-Star Trevor Bauer, the Indians rotationrankedthird in the majors with a 3.39 ERA and ranked second to only the Houston Astros in strikeouts.Meanwhile, ClevelandacquiredGuyerin a 2016 trade-deadline deal. He later re-signed on atwo-year contract, which included a club option. He hit .206 with seven home runs, 11 doubles and 27 RBI in 103 games in 2018.While his numbers may not jump off the page, Guyer will best be remembered in Cleveland for his performance during the 2016 playoffs. As the Indians made a run to the World Series, he posted a .333 average with one double, six runs and three RBI in 10 appearances.