Williamson, Blach among 10 top prospect performers Monday

Giants No. 13 prospect notches a career-high 6 RBIs, No. 20 throws his first 9-inning shutout for River Cats

Williamson, Blach among 10 top prospect performers Monday

Giants No. 13 prospect Mac Williamson and No. 20 prospect Ty Blach helped Triple-A Sacramento coast to an 11-0 win over Round Rock on Monday night.

Williamson was stellar at the plate, finishing 2-for-2 with two walks, a double, a grand slam and a career-high six RBIs. The performance was by far his best of the season for the River Cats and he's hitting .261 with 10 doubles, three homers and 19 RBIs.

The left fielder is also riding a seven-game hitting streak, over which time his average has jumped 48 points.

Blach was nearly unhittable on the mound. He tossed his first-ever nine-inning shutout, allowing a double and two singles while striking out six Express hitters. The southpaw has had an up and down year for Sacramento, but Monday's win bumped his record to 11-10.

Drafted in the fifth round in 2012, Blach is just one 'W' off the career high he set while going 12-4 for Class A Advanced San Jose in 2013.

The rest of the 10 best performances from top Minor Leaguers

Astros No. 8 prospect Francis Martes continues to deliver for Class A Advanced Lancaster. The Dominican-born 19-year-old tossed seven scoreless innings for the JetHawks, scattering five hits while registering nine strikeouts. Promoted from Class A Quad Cities in late July, the right-hander had his best start at the Advanced level on Monday after giving up at least two earned runs in each of his first three starts. He's 2-1 with a 3.86 ERA for the JetHawks.

Cardinals No. 9 prospect Luke Weaver recorded 5 1/3 scoreless frames for Class A Advanced Palm Beach on Monday night. The 21-year-old tossed seven strikeouts against no walks while scattering six hits against Jupiter. Weaver has not given up a run in his past three outings (18 1/3 total innings) and has surrendered just three earned runs in his past eight starts (47 total innings). That latter run has cut his ERA from 2.97 to 1.67 and he's rebounded well from a rough first season in 2014. Drafted No. 27 overall last summer, he surrendered eight runs in 9 1/3 innings on his way to finishing 0-1 with a 7.71 ERA in six starts last year.

D-backs No. 3 prospect (No. 70 overall) Aaron Blair tossed his fifth straight quality start for Triple-A Reno. The 6-foot-5 right-hander has not lost since his Aces debut on June 17, going 6-0 in eight starts since. His ERA is a season-low 3.33 and his four strikeouts on Monday gave him 12 in the past two outings (against two walks). He was promoted in mid-June after an excellent first-half run with Double-A Mobile. Blair went 6-3 with a 2.70 ERA for the BayBears and has a 10-2 record in his past 14 starts.

Mariners No. 1 prospect (No. 51 overall) Alex Jackson cracked his third home run in six games for Class A Short Season Everett. The outfielder finished 1-for-3 with a solo shot in Monday's 5-0 win over Spokane. Jackson has eight doubles, five homers and 18 RBIs since making his AquaSox debut on June 18.

Phillies No. 11 prospect Ricardo Pinto won his fourth straight start for Class A Advanced Clearwater, giving up three hits and striking out six batters in 6 2/3 shutout innings. The 21-year-old right-hander has cut his ERA from 3.35 to 2.50 during his winning streak and stands at 7-2 in 11 starts for the Threshers this season. He's shown strong control of the strike zone, too, fanning 20 batters while issuing five free passes in his past four outings.

Tigers No. 1 prospect Steven Moya is out of the woods. The right fielder went 2-for-5 with a double and a two-run homer for Triple-A Toledo, making him 5-for-8 with three extra-base hits and three RBIs in the past two games. This run follows a 3-for-28 slump that ran through Saturday. Moya is hitting .239/.287/.411 with 22 doubles, 16 homers and 59 RBIs for the Mud Hens.

Yankees No. 5 prospect James Kaprielian bounced back from a rough outing by tossing two innings of shutout relief for New York's second Gulf Coast League squad. The right-hander cut his ERA from 81.00 to 11.57 after allowing one hit and striking out two in two innings. He recorded only one out in his debut on July 28 and allowed three earned runs on one hit and two walks. New York drafted Kaprielian No. 16 overall out of UCLA this summer.

White Sox No. 21 prospect Matt Davidson reached 20 home runs for the fifth straight season. He's now reached the mark twice in a row for Triple-A Charlotte and has collected 120 career Minor League homers since Arizona drafted him in 2009. Davidson finished 1-for-4 in Monday night's 10-6 loss to Columbus and has four homers in August. He's been fending off the Mendoza line for roughly a week and sits at .206 in 456 at-bats this season.

Alex M. Smith is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.