Mookie Betts, 2B, Boston Red Sox
2014 Stats: .448/.484/.707, 18 R, 7 2B, 3B, 2 HR, 5 SB, 5 BB, 7 K (14 G)
After a breakout full-season debut last year across both Class-A levels, Betts entered 2014 as one of the better second-base prospects in the minor leagues. The 21-year-old has been very impressive through the first three weeks of the season, highlighted by his 1.191 OPS, 10 extra-base hits and five stolen bases in 14 games. Betts also is in the midst of a nine-game hitting streak in which he’s batting .436 with 14 runs and six extra-base hits.
Jorge Bonifacio, OF, Kansas City Royals
2014 Stats: .239/.338/.358, 3 2B, 3B, HR, 12 RBI, 8 BB, 16 K (17 G)
Bonifacio got off to a brutal start back at Double-A Northwest Arkansas, going 3-for-25 through his first seven games. Since then, however, the 20-year-old outfielder has started to heat up at the dish, evidenced by his .310/.370/.429 batting line and four-extra base hits in his last 10 contests.
Cam Perkins, OF, Philadelphia Phillies
2014 Stats: .421/.459/.719, 9 2B, 3B, 2 HR, 12 RBI, 2 SB, 4 BB, 7 K (15 G)
Perkins, the Phillies’ sixth-round draft pick in 2012, had an under-the-radar good full-season debut last year, batting .295/.346/.444 with 41 extra-base hits in 103 games and High-A Clearwater. The 23-year-old has been one of the Eastern League’s best hitters this season, as he enters Tuesday with a 1.178 OPS and 12 extra-base hits (of 24 total hits). Perkins is currently enjoying a nine-game hitting streak in which he’s batting .417 five doubles, a home run and 12 RBI.
Ketel Marte, MIF, Seattle Mariners
2014 Stats: .380/.436/.465, 6 2B, 3 SB, 7 BB, 8 K (18 G)
Marte was assigned to Double-A Jackson after playing only 19 games at High-A High Desert in 2013—a testament to his all-around ability and outstanding makeup. The 20-year-old has been one of the hottest hitters in the Southern League to begin the season, amassing 27 hits through 18 games. The switch hitter enters Tuesday riding a six-game hitting streak.
Ryan Rua, 3B, Texas Rangers
2014 Stats: .354/.456/.583, 5 2B, 2 HR, 7 RBI, 8 BB, 8 K (15 G)
Ryu enjoyed a power surge in 2013, as the 24-year-old third baseman slugged .525 with 26 home runs and 32 home runs in 525 plate appearances. Rua is back at Double-A Frisco after playing there the final month of the regular season, and he’s handled the level well in the early going, with a 1.039 OPS and seven extra-base hits through 15 games.
Yorman Rodriguez, OF, Cincinnati Reds
2014 Stats: .317/.353/.429, 2B, 2 HR, 6 RBI, 3 SB, 4 BB, 16 K (16 G)
Rodriguez turned in a long-overdue breakout campaign in 2013, posting a .751 OPS with 35 doubles, 13 home runs and 10 stolen bases in 129 games between High-A Bakersfield and Double-A Pensacola. The 21-year-old—who is on the Reds’ 40-man roster—got off to a slow start back this season back at Pensacola but has been red-hot during his current six-game hitting streak, batting .520 with five runs and 13 hits (two extra-base hits).
Steve Moya, OF, Detroit Tigers
2014 Stats: .167/.222/.313, 2 HR, 7 RBI, 2 SB, 4 BB, 15 K (14 G)
Moya’s raw power is among the best in the minor leagues, but he’s struggled to stay healthy throughout his professional career and been slow to move up the organizational ladder. The 22-year-old posted a 106/18 strikeout-to-walk ratio last season at High-A Lakeland, so it’s not surprising Moya is batting just .167 through 14 games.
Miles Head, 3B, Oakland Athletics
2014 Stats: .188/.255/.250, HR, 5 RBI, 4 BB, 12 K (13 G)
Head was one of the top breakout prospects in 2012, when he batted .333/.391/.577 with 31 doubles and 23 home runs between High-A Stockton and Double-A Midland. However, he posted a .527 OPS last season in 40 games at Midland and spent most of the year on the disabled list. The 22-year-old has started slowly this season back at Double-A, with a .505 OPS and 12 strikeouts in his first 12 games.
Keenyn Walker, OF, Chicago White Sox
2014 Stats: .149/.184/.191, 3B, 4 SB, 2 BB, 22 K (13 G)
The No. 47 overall pick in the 2011 draft, Walker spent all of 2012 at Double-A Birmingham and struggled mightily, batting .201/.319/.277 with 153 strikeouts in 550 plate appearances. He’s repeating the level this year but things haven’t gone any better, as you might have guessed by his .375 OPS and 22 strikeouts in 49 plate appearances.