Opposing hitters have had a tough time scoring runs off Erick Fedde of late.
On Friday night, the No. 89 overall prospect established a pair of career highs by striking out 10 hitters over seven innings as Class A Advanced Potomac defeated Wilmington, 2-1. Fedde allowed an unearned run on five hits and generated nine ground-ball outs in the outing, throwing 70 of his 97 pitches for strikes.
Fedde, the Nationals' No. 5 prospect, has not allowed more than one earned run in 11 straight starts for the P-Nats -- dating back to his outing on May 23 -- during which he's posted a 0.62 ERA and accrued 60 strikeouts in 57 2/3 innings.
In his first full season since undergoing Tommy John surgery in May 2014, Fedde, 23, has pitched to a 2.85 ERA with a 1.13 WHIP across 17 starts for Potomac. He's struck out 95 hitters against 19 walks in that span, while holding opposing hitters to a .244 average and only seven home runs in 91 2/3 innings.
The rest of the best performances from top prospects Friday
• No. 33 overall prospect Bradley Zimmer (Indians' No. 1) was at the heart of Triple-A Columbus' 17-run outburst on Friday night, going 4-for-6 with a pair of doubles, three runs scored and an RBI. The four-hit performance improved the 23-year-old outfielder's Triple-A average to .357 through 11 games, and he's hitting .264 through 104 games for the season.

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• No. 54 overall prospect Nick Senzel busted out of a 3-for-19 skid at the plate as he went 3-for-4 with a home run, three runs scored and two stolen bases for Class A Dayton. All four of the Reds' No. 1 prospect's home runs have come with Daytona, for whom he's hit .318/.434/.545 through 32 games.
• No. 91 overall prospect Ian Anderson (Braves' No. 5) tossed three more scoreless frames for the GCL Braves, extending his scoreless innings streak to 18 to begin his professional career. Overall, the 18-year-old righty, the third-overall pick in the 2016 Draft, has allowed two unearned runs on 14 hits and two walks while striking out 18 across five starts.
• No. 92 overall prospectJustus Sheffield (Yankees' No. 7) made himself known to Yankees fans with a stellar debut for Class A Advanced Tampa. The 20-year-old southpaw, acquired from Cleveland in the Andrew Miller trade, set a career high with 11 strikeouts as he fired six strong innings in a win against Daytona. He allowed one earned run on two hits and a walk while throwing 58 of his 88 pitches for strikes. No. 24 overall prospectGleyber Torres (Yankees' No. 2), acquired in the Aroldis Chapman blockbuster, was Tampa's offensive star, hitting his first home run -- a three-run shot in the seventh inning -- as a member of the Yankees' system.
• D-backs No. 5 prospect Alex Young tossed his first career complete game as Class A Advanced Visalia defeated Inland Empire, 2-1. The 22-year-old southpaw allowed one unearned run on four hits and struck out six in nine innings, lowering his ERA to 3.77 in the process.
• Tigers No. 6 prospect Kyle Funkhouser fired three hitless innings in his eighth start for Class A Short Season Connecticut. The 2016 fourth-rounder walked one and struck out four, giving him an impressive 19-3 strikeout-to-walk ratio through 23 innings to begin his career.
• Making his debut for Class A Lake County, Indians No. 7 prospect Triston McKenzie struck out a career-best 11 hitters in 5 1/3 innings. Unfortunately, the 19-year-old righty walked away with the loss after allowing three earned runs on four hits. McKenzie was promoted to full-season ball after posting a 0.55 ERA, a 0.95 WHIP and a 55-16 strikeout-to-walk ratio over 49 1/3 innings (nine starts) at Class A Short Season Mahoning Valley.
• Dodgers No. 7 prospect Yadier Alvarez was sharp once against for Class A Great Lakes as he fired five innings of three-hit ball, striking out seven, against Lake County. With the performance, the 20-year-old right-hander lowered his season ERA and WHIP to 1.89 and 0.92, respectively, and he's now fanned 57 hitters in 38 innings to begin his career.
• In his best outing as a professional, White Sox No. 8 prospect Alec Hansen recorded his first pro win as he piled up 11 strikeouts over six one-hit innings for Rookie-level Great Falls. The 2016 second-rounder allowed one hit and one walk, throwing 59 of his 85 pitches for strikes in the outing. Through his first 26 2/3 pro innings, Hansen, 21, has yielded just nine hits and seven walks while striking out 43 hitters.
• Marlins No. 12 prospect J.T. Riddle went 1-for-5 for Double-A Jacksonville to extend his hitting streak to 24 games. The 24-year-old's streak is the longest in the Southern League this season as well as the longest since the Marlins assumed the Suns franchise in 2009.
• Reds No. 12 prospect TJ Friedl had a pro debut to remember as he homered in his first two at-bats for Rookie-level Billings en route to finishing the game 3-for-3. It wasn't until after the completion of the 2016 Draft that the Nevada-Reno product, a red-shirt sophomore, was discovered to be draft-eligible, prompting the Reds to add him to their system with a $732,500 contract.
• Red Sox No. 21 prospect Bobby Dalbec had a big game at the plate for Class A Short Season Lowell, hitting a home run and a double as part of a 3-for-5 performance. The 2016 fourth-rounder, who also tallied a career-best four RBIs in the contest, owns a .353/.421/.647 slash line with six extra-base hits and 10 RBIs through his first nine games.