Here's a look at the top offensive performers in each league for the week ending July 7:
Cesar Hernandez, Lehigh Valley
(.375/.394/.406, 8 G, 12-for-32, 1 2B, 2 RBI, 4 R, 1 BB, 6 K, 3 SB)
Hernandez kicked off the week by going 4-for-5 with three stolen bases in Lehigh Valley's 7-0 win over Toledo on Monday and reached base in each of his remaining seven games as well. On Wednesday the 23-year-old second baseman was named to the IL All-Star squad. Hernandez ranks 11th in the league in hitting (.308) and third in steals with 26 in 32 attempts. The Phillies prospect is never out of an at-bat; he's batting an astonishing .316 this season when behind in the count.
Pacific Coast League
Alex Castellanos, Albuquerque
(.417/.548/.917, 6 G, 10-for-24, 3 2B, 3 HR, 7 RBI, 7 R, 6 BB, 4 K, 2 SB)
As hitters in Albuquerque are wont to do, Castellanos put together a monster season last year, hitting .328/.420/.590 with 17 homers and 16 stolen bases. His numbers have not quite reached those levels this year but are headed in that direction after a strong week. The 26-year-old outfielder closed out the stretch with four straight multi-hit games, including a home run in each of his last three contests. Castellanos did not strike out in those four games and has now scored 46 times in 57 games this season.
Daniel Muno, Binghamton
(.417/.517/.833, 6 G, 10-for-24, 1 2B, 3 HR, 12 RBI, 5 R, 4 BB, 4 K, 1 SB)
Muno was batting just .199 at the end of May, but one of the things he and Binghamton hitting coach Luis Natera have been working on is shortening his swing to deal with the inside fastball. That work paid off spectacularly Thursday as Muno went deep twice -- both on fastballs in -- and drove in seven runs. The 24-year-old switch-hitter homered again Saturday, and despite the early-season batting woes, sports a .385 on-base percentage thanks to having drawn 59 walks while fanning only 58 times.
Dustin Martin, Mobile
(.467/.556/.867, 4 G, 7-for-15, 3 2B, 1 HR, 5 RBI, 4 R, 3 BB, 4 K, 1 CS)
The 29-year-old Martin only got into four games for the BayBears last week, but he made them count. Martin collected multiple hits in three of the contests and drove in a run in all four -- all of which were Mobile wins. After spending last season in the Mets organization, Martin hooked on with the BayBears in late May and is batting .326/.410/.558 in 31 games while splitting time between right field, left field and designated hitter.
Audry Perez, Springfield
(.500/.563/1.000, 4 G, 7-for-14, 1 2B, 2 HR, 7 RBI, 3 R, 2 BB, 4 K)
Perez's third season in Springfield has been a difficult one -- he's batting .209/.234/.349 in 57 games and has hit no better than .219 in any month -- but he's off to a fine start in July. The 24-year-old backstop homered and drove in five runs Wednesday before adding a solo shot on Independence Day. Apart from Perez's seven hits, he also drew a pair of walks in four games after walking only once in his first 53 contests.
Scott Schebler, Rancho Cucamonga
(.448/.500/1.034, 7 G, 13-for-29, 2 2B, 3 3B, 3 HR, 10 RBI, 9 R, 2 BB, 7 K, 1 SB, 2 CS)
A 26th-round pick in 2010, Schebler is having his strongest season at the plate this year and has already surpassed personal marks with 15 homers and 10 triples in his first 74 Cal League games. The 22-year-old outfielder celebrated the Fourth of July by going 4-for-5 with two long balls and a triple and collected multiple RBIs in four games last week. Schebler has posted a .397/.450/.808 line in 18 games since the All-Star break, but it hasn't been enough for the Quakes, who are in last place at 5-13 in the second half.
Christian Walker, Frederick
(.375/.423/.833, 6 G, 9-for-24, 5 2B, 2 HR, 4 RBI, 9 R, 2 BB, 3 K)
The 22-year-old Walker began the season as the Orioles' No. 17 prospect and backed it up by hitting .353/.420/.474 in 31 games with Delmarva before earning a promotion to Frederick. He's been solid if not overwhelming in the Carolina League, though Lynchburg might disagree -- Walker went 7-for-13 with two homers, five doubles, four RBIs and seven runs scored in three games against the Hillcats between Thursday and Saturday. Overall, Walker ranks second in the Orioles system with 50 RBIs and fifth with a .312 batting average.
Florida State League
Mike Kvasnicka, Fort Myers
(.421/.429/1.000, 5 G, 8-for-19, 3 2B, 1 3B, 2 HR, 6 RBI, 5 R, 1 BB, 5 K)
The 33rd overall pick in the 2010 Draft, Kvasnicka had a disappointing two-year stint in the South Atlantic League culminating in a .232/.275/.412 line last season. The Minnesota native was acquired by the Twins in March and their faith in him has paid off: Kvasnicka is off to a strong start in the Florida State League, hitting .313/.378/.650 with 20 RBIs after 22 games. The 23-year-old fell a homer shy of the cycle Wednesday, then made up for it Friday by going deep twice. Thanks to Kvasnicka, first-place Fort Myers has experienced little dropoff since losing several top players to Double-A New Britain.
Erik Gonzalez, Lake County
(.379/.400/.655, 11-for-29, 1 3B, 2 HR, 10 RBI, 7 R, 0 BB, 1 K, 2 SB)
Not only did Gonzalez drive in 10 runs and collect a hit in each of his games last week, he struck out just once in 29 at-bats. Putting the ball in play has paid off for the 21-year-old infielder, who fanned 58 times in his first 73 games. Though Lake County ranks 13th in the 16-team Midwest League in scoring, Gonzalez is seventh on the circuit with 53 runs scored and leads the Captains with 17 doubles, six triples and 40 RBIs. After a league-worst 23-44 record in the first half, Lake County is 12-6 in the second half, including a 7-1 mark on the road.
South Atlantic League
Estarlin Martinez, Hagerstown
(.444/.516/.704, 7 G, 12-for-27, 4 2B, 1 HR, 8 RBI, 7 R, 3 BB, 2 K)
Martinez was batting .219/.315/.300 through the end of June -- not ideal for a corner outfielder/first baseman/designated hitter. Emerging from a 1-for-18 slump, the 21-year-old reeled off four straight multi-hit games and finished off the week with a homer, single, three RBIs and four runs scored as the Suns outlasted Delmarva, 11-7, on Sunday. Martinez particularly thrives in day games, as befits a Suns player -- he's batting .389/.511/.528 in 12 day games this season.
New York-Penn League
Cesar Valera, State College
(.478/.571/.913, 6 G, 11-for-23, 5 2B, 1 3B, 1 HR, 6 RBI, 9 R, 3 BB, 3 K, 1 SB)
Valera had a brief eight-game stint with Class A Advanced Palm Beach in May, going 4-for-23 with 11 strikeouts. His tenure with the Spikes has gone far more smoothly -- he's hitting .362/.436/.609 and has reached base in each of his 17 games. The 21-year-old shortstop bookended last week with a pair of three-hit games, going 3-for-4 with a two doubles at Williamsport on Monday and falling a home run shy of the cycle against Mahoning Valley on Sunday.
Jordan Leyland, Vancouver
(.419/.486/.581, 7 G, 13-for-31, 5 2B, 7 RBI, 7 R, 4 BB, 6 K)
A ninth-round pick in the 2012 Draft, Leyland hit .235 over 23 games with the Canadians last summer. After 23 games this summer, the 23-year-old first baseman is batting .355 and had a 13-game hit streak snapped Sunday. Leyland collected 11 hits and three walks over four games between Tuesday and Friday and scored in each of his first six games last week. Though he hasn't shown much power -- eight of his 33 hits have gone for extra bases and just one was a homer -- he's first in the Northwest League in hitting.
Victor Cruzado, Kingsport
(.476/.500/.714, 5 G, 10-for-21, 2 2B, 1 HR, 4 RBI, 3 R, 1 BB, 2 K)
It's only 12 games, but the Appy League has yet to figure out how to keep Cruzado off the bases. The switch-hitting 21-year-old had multiple hits in four of his five games last week and is hitting .390/.444/.561 overall for Kingsport. The bulk of the damage has come from the left side of the plate -- he's batting .483 against right-handed pitching but is just 2-for-12 against southpaws.
Cal Towey, Orem
(.417/.576/.833, 7 G, 10-for-24, 2 3B, 2 HR, 11 RBI, 9 R, 7 BB, 4 K, 1 CS)
A 17th-round pick out of Baylor last month, Towey's pro career got off to an undistinguished start: he was 4-for-30 (.133) in his first nine games. The last seven, however, have been distinguished indeed. Towey tripled and scored twice at Grand Junction on Monday, collected three hits and three RBIs against Idaho Falls on Wednesday and ripped host Ogden for two homers, a single, five RBIs and four runs scored on July 4. Though Towey is batting only .259 overall, he's drawn a league-leading 17 walks in 16 games, giving him a .467 on-base percentage -- second-best on the circuit.