Here's a look at the top offensive performers in each league for the week ending May 17:
Rob Refnsyder, Scranton/Wilkes-Barre
(.400/.471/.733, 7 G, 12-for-30, 4 2B, 2 HR, 6 RBI, 6 R, 3 BB, 7 K, 3 SB)
Defensive concerns at second base might have been kept Refsnyder from starting the year with the Yankees, but through the first month of the season, he wasn't hitting his way to the Majors either with a .259 average and .635 OPS in April. Last week, the offense came back in a big way, and on Sunday, the power in particular returned. After going the first 32 games without a homer -- 52 if you also include last season -- the 2012 fifth-rounder hit two blasts against Durham. Following his offensive outburst last week, Refsnyder's average is now above .300 (.303) for the first time since April 11.
Pacific Coast League
Jon Singleton, Fresno
(.357/.471/.893, 7 G, 10-for-28, 5 HR, 23 RBI, 8 R, 6 BB, 3 K, 2 SB)
Backed by a Fresno-record 10 RBI performance on Wednesday and three grand slams in a five-game span, Singleton had what might have been the most impressive week by a Triple-A slugger this season. While Carlos Correa's arrival in Fresno has received much of the publicity of late, Singleton has done his share of grabbing the headlines with Grizzlies manager Tony DeFrancesco even telling media members, "You should be talking to this guy." After last week's outburst, the one-time top first-base prospect in baseball owns a .263/.381/.602 line with 12 homers in 36 games in the PCL. Unsurprisingly, his 40 RBIs lead all Minor Leaguers -- seven more than Correa (33) in second place.
Oscar Tejeda, Portland
(.467/.485/.733, 7 G, 14-for-30, 6 2B, 1 3B, 10 RBI, 8 R, 2 BB, 5 K)
Back in 2011, Tejeda was a top-10 prospect in the Red Sox system, but the Dominican Republic native with a wild swing wasn't able to prove he could hit at the Double-A level. The Red Sox designated him for assignment in June 2012, and after stints in the Pirates and Nationals systems, the right-handed slugger returned to his original organization this season. Playing as a utilityman for Portland with time at third, short and in the corner outfield spots, he has a .365/.382/.510 line in 25 games for Portland. His 13 doubles are tied atop the Eastern League leaderboard. Tejeda still doesn't have much patience at the plate (20 strikeouts, four walks), but an improved ability to make good contact is encouraging.
Jabari Blash, Jackson
(.435/.500/.826, 6 G, 10-for-23, 3 2B, 2 HR, 9 RBI, 6 R, 1 BB, 2 K)
Blash bounced between Jackson and Triple-A Tacoma in 2014, and after a rough start to the 2015 campaign in the PCL (.167 average, .657 OPS), he's played again at both venues. But as the saying goes, the 25-year-old outfielder can only hit his way back up, and so far in the Southern League, he's done a good of attempting to do just that. Blash's highlight performance came Wednesday when he homered twice and drove in seven runs in the Generals' 14-10 win over Biloxi. In 12 games back with Jackson, the right-handed hitter has a .348/.412/.761 line with four homers, seven doubles and 15 RBIs.
Balbino Fuenmayor, NW Arkansas
(.444/.483/1.074, 6 G, 12-for-27, 2 2B, 5 HR, 8 RBI, 7 R, 1 BB, 2 K)
Fuenmayor continues to be one of the coolest stories in the Minors this season. As detailed when he won the Player of the Week award two weeks back, the Venezuela native hadn't played above the Class A level in the Blue Jays system and spent last year in the independent Canadian-American Association before a breakout there and in the Venezuelan Winter League got him a deal with the Royals. Though some might wonder when his hot start will begin to regress -- his .398 BABIP is a bit high -- Fuenmayor continues to do nothing but hit. He had two hits in each of his six games last week -- a week that start with a two-homer game at Arkansas. The 25-year-old first baseman's .370 average ranks second in all of the Minors while his 1.055 OPS sits fifth.
Alex Burg, High Desert
(.409/.464/1.000, 6 G, 9-for-22, 4 2B, 3 HR, 11 RBI, 6 R, 4 BB, 5 K)
Speaking of Minor League OPS leaders, that brings us nicely to Burg, who has taken advantage of his move to the California League in the early going. A former prospect in the Giants and Marlins systems, the 27-year-old DH leads the Minors with an 1.129 OPS for the Mavericks and owns a .344/.442/.688 line overall. Given his age and his solid .264/.364/.405 line at Double-A Jacksonville a season ago, don't be surprised to see Burg join an already stacked lineup at Frisco sometime in the near future.
Trey Michalczewski, Winston-Salem
(.400/.464/.800, 7 G, 10-for-25, 4 2B, 2 HR, 5 RBI, 6 R, 3 BB, 8 K)
The No. 8 White Sox prospect raised his average from .254 to .281 and doubled his season's home run output by week's end. It's the first taste of big-time success the 20-year-old switch-hitting third baseman has had at the Class A Advanced level after he hit .194/.293/.222 in a 19-game cameo with the Dash in 2014. A seventh-rounder out of an Oklahoma high school in 2013, Michalczewski has average potential in both his hit and power tools, but that projection could change if he strings together more weeks like this last one.
Florida State League
Willy Adames, Charlotte
(.429/.455/.762, 6 G, 9-for-21, 2 2B, 1 3B, 1 HR, 5 RBI, 1 BB, 3 K, 1 SB)
Acquired by the Rays from the Tigers in the David Price trade last July, Adames is showing why Tampa Bay thought highly enough to ask for him in a deal involving their former ace. After his best week with Class A Advanced Charlotte, the 19-year-old shortstop has his average above the .300 line for the first time this season and has an .817 OPS at a light-hitting position in a light-hitting league. Although it's not necessarily included in consideration for Offensive Player of the Week awards, it's worth noting Adames turned the triple play that helped Buddy Borden throw a seven-inning no-hitter on Wednesday.
Rowdy Tellez, Lansing
(.357/.419/.643, 7 G, 10-for-28, 5 2B, 1 HR, 7 RBI, 3 BB, 7 K)
Tellez, the Blue Jays' No. 23 prospect, is a prototypical have-bat-will-travel first-base prospect, so this past week was an encouraging sign for those in Toronto. The 20-year-old left-handed slugger's breakout performance came Wednesday when he homered and doubled three times in Lansing's 6-4 win over South Bend. Tellez is batting .287 with five homers, 25 RBIs and an .810 OPS in 36 games with the Lugnuts. His 38 strikeouts and 24.1 percent strikeout rate are a bit concerning, but if he can keep making loud contact, the Jays won't mind too much.
South Atlantic League
Herlis Rodriguez, Lakewood
(.474/.500/.789, 5 G, 9-for-19, 3 2B, 1 HR, 3 RBI, 6 R, 1 BB, 2 K, 1 SB)
We first wrote about Rodriguez when he faced his twin brother Helmis -- a left-handed pitcher with Asheville -- for the first time back on May 10. Helmis got the better of the two that day, but it's Herlis here who gets the first Player/Pitcher of the Week award. The Phillies outfield prospect had multiple hits in three of his five games last week, raising his average from .176 to a much more respectable .241 in the process. He also doubled both his home runs and doubles season totals as well.