With the 2021 Draft beginning Sunday at 7 p.m. ET on MLB Network and ESPN and continuing Monday at 1 p.m. ET exclusively on MLB.com with MLB Network live look-ins and coverage, here are brief breakdowns of the top 10 prospects in this year's class. Find complete scouting reports and bios for many more of the best players on our Top 250 Draft Prospects list.

Marcelo Mayer, SS, Eastlake HS (CA) (No. 1)
A left-handed-hitting shortstop out of the same San Diego-area high school that produced Adrian Gonzalez and No. 7 Twins prospect Keoni Cavaco, Mayer is more tooled-up than a hardware store. He's an elite contact hitter who figures to grow into his already-apparent power potential, and on the dirt he shows great instincts, impressive footwork and soft hands to complement a 60-grade arm. More »

Jack Leiter, RHP, Vanderbilt (No. 2)
Leiter was a potential first-rounder as a New Jersey high school senior in 2019, but the son of a two-time All-Star and World Series champ made clear his intention to pitch for the Commodores. After a brief but dazzling collegiate debut last spring, the righty dominated this year, carving out a spot for himself as the consensus top pitching prospect in the Draft. Featuring an exceptionally lively fastball that tops out at 97, Leiter also has two very good breaking pitches. More »

Jordan Lawlar, SS, Jesuit Prep (TX) (No. 3)
A remarkably polished hitter as a high school senior, Lawlar works the gaps and has demonstrated an ability to shoot balls to the opposite field. He's got 60-grade speed, which he puts to use on the bases and in showing a lot of range as a shortstop. Often compared to Bobby Witt Jr. -- the Texas high school shortstop who went No. 2 overall in 2019 -- Lawlar has a similarly compact right-handed swing and also figures to develop power while staying at the shortstop position. More »

Kahlil Watson, SS, Wake Forest (NC) (No. 4)
Watson is a well-rounded player who used outstanding bat speed, raw power and an ability to make consistent contact to boost his stock dramatically as a high school senior. Even if he needs to tone down his big, left-handed swing to get the better of more advanced pitchers as he develops, his plate discipline and other tools (like his running speed, quickness on defense and arm strength) mean he'll always offer a lot of upside. More »

Henry Davis, C, Louisville (No. 5)
Davis compares favorably to Louisville's most recent first-round catcher, showing more power and a better arm than Will Smith had when the Dodgers took him No. 32 overall in 2016. The 6-foot-2, 210-pounder slugged 15 homers and stole 10 bases over 50 games for the Cardinals this spring, batting .370/.482/.663. His 70-grade arm and fine footwork make him dangerous behind the plate, too, although he'll work on developing more consistency as a receiver. Like Smith, he is quick enough that some teams might be tempted to try him out in other positions. More »

Kumar Rocker, RHP, Vanderbilt (No. 6)
Rocker was No. 23 on Pipeline's Draft rankings in 2018, but his legend really took off when he unfurled a 19-strikeout no-hitter against Duke as a freshman in the 2019. This year, he led Division I pitchers with 14 wins while tying teammate Leiter with a whopping 179 strikeouts. Rocker typically works in the mid-90s with his fastball but can occasionally dial it up a few more ticks. It's his 70-grade slider, though, that most often makes even good hitters look foolish, and he has a curveball with quality vertical break as well as a developing changeup. More »

Jackson Jobe, RHP, Heritage Hall (OK) (No. 7)
The highest-ranked high school pitcher, Jobe features a slider that's arguably more devastating than Rocker's, traveling toward the plate in the low 80s and spinning more than 3,000 rpm. His tumbling changeup, which he throws to righties and lefties, might be nearly as good. Jobe is a Mississippi commit, and if he doesn't sign with a big league organization, he could be a two-way player for the Rebels. More »

Brady House, SS, Winder-Barrow (GA) (No. 8)
House, at 6-foot-4 and 215 pounds at age 18, has power potential to dream on yet is athletic enough that the possibility of his remaining at shortstop is on the table. If he has to move, his strong throwing arm and solid fielding will likely make him a true asset at third base. Although House struggled after he took on an excessively aggressive approach at the plate, he's since shortened his stroke and gotten back to making contact consistently enough to be a real danger. More »

Ty Madden, RHP, Texas (No. 9)
The Big 12 Conference pitcher of the year, Madden put together a junior season illustrative of the continued improvement of his stuff and command throughout his time with the Longhorns, whiffing 137 in 113 2/3 innings and going 7-5 with a 2.45 ERA. The righty's fastball comes in with sink and bore, typically at 93-96 mph, and he has an above-average slider and solid changeup, as well as a good but inconsistent curve. More »

Colton Cowser, OF, Sam Houston (No. 10)
Cowser, a teammate of Madden's at Texas' Cypress Ranch High School, made himself the top outfield prospect in the Draft class with the help of a 60-grade hit tool and solid power potential. His left-handed swing sprays liners, and he maintains a cool, controlled approach that profits his quick hands. With plus running speed, an average arm and good instincts in center field, he has value on the grass, too. More »