Shane Bieber has passed every test the Indians have thrown his way this season, a trend that continued Tuesday with his scoreless debut for Double-A Akron.
Starting for Akron in game one of a doubleheader against Binghamton, Bieber, the Indians' No. 13 prospect, limited opposing hitters to five hits over 6 2/3 innings. He found the zone with 65 of his 94 pitches, striking out five and walking one, and generated another nine outs on the ground.
Bieber's promotion to Double-A, his second promotion this season, came after the 22-year-old right-hander went 6-1 with a 3.10 ERA in 14 starts with Class A Advanced Lynchburg. Over 90 innings in the Carolina League, he struck out 82 and walked just four.
A fourth-round pick in 2016, Bieber began his first full professional season in the Midwest League, where he posted a 3.10 ERA with a 31-to-1 strikeout to walk ratio in 29 innings totaling five starts.
Overall, Bieber owns a 2.94 ERA, as well as a stellar 119-to-6 strikeout-to-walk ratio, in 125 2/3 innings spanning 20 starts across three levels.
The rest of the best performances from top prospects Tuesday
• No. 10 overall prospect Kyle Tucker (Astros' No. 1) homered in his first game back for Double-A Corpus Christi after a brief stint on the disabled list for a sore back. He's now hit nine homers in 37 games for the Hooks, matching the total he posted over 48 games with Class A Advanced Buies Creek to earn a promotion.

MILB Video - Title: Tucker goes deep - Url: http://www.milb.com/r/video?content_id=1651440383

• No. 28 overall prospect Alex Verdugo (Dodgers' No. 2) and Willie Calhoun (No. 70 overall, Dodgers' No. 3) both went deep for Triple-A Oklahoma City. Calhoun's home run, his 23rd, easily cleared the wall, and he finished the game 3-for-5. Verdugo, on the other hand, required an assist from Reno right fielder Zach Borenstein('s head) to record his fourth homer of the season in a 2-for-5 performance that included four RBIs.

MILB Video - Title: Verdugo's three-run homer - Url: http://www.milb.com/r/video?content_id=1651728283

• No. 38 overall prospect Mike Soroka (Braves' No. 5) tossed seven strong innings, allowing one earned run on six hits, in a no-decision for Double-A Mississippi. He struck out six and did not issue a walk in the outing, throwing 66 of his 93 pitches for strikes. The 19-year-old righty has allowed two or fewer earned runs in three straight starts, completing seven innings in each. He owns a 2.32 ERA in 112 2/3 innings (19 starts) this season.
• No. 60 overall prospect Lucas Giolito (White Sox No. 7) got back on track for Triple-A Charlotte by tossing seven scoreless innings in a win over Columbus. The 23-year-old righty scattered four hits while walking three and striking out six. It was a much needed performance for Giolito, who had allowed a combined eight earned runs over 6 2/3 innings in his previous two starts.

MILB Video - Title: Giolito finishes the seventh - Url: http://www.milb.com/r/video?content_id=1651099083

• No. 82 overall prospect Luis Ortiz (Brewers' No. 3) gave up one earned run on four hits over a season-high seven innings en route to his fourth win for Double-A Biloxi. Throwing 59 of his 93 pitches for strikes, the 21-year-old right-hander struck out seven without issuing a walk. He sports a 3.57 ERA through 80 2/3 frames (17 starts) on the year.

MILB Video - Title: Ortiz's seventh strikeout - Url: http://www.milb.com/r/video?content_id=1652085383

• No. 100 overall prospect Tyler O'Neill (Cardinals' No. 5) connected on his first home run since joining the Cardinals organization, a game-tying two-run shot in the seventh inning for Triple-A Memphis. The home run was O'Neill's 20th this season, and he's now gone deep six times in his last eight games.

MILB Video - Title: O'Neill's first Memphis homer - Url: http://www.milb.com/r/video?content_id=1651583883

• Dodgers No. 28 prospect Brendon Davis drove in a career-high five runs with a pair of doubles in a 2-for-5 performance for Class A Advanced Rancho Cucamonga. The 19-year-old infielder has collected multiple hits in two of five games since his promotion from Class A Great Lakes, where he slashed .245/.357/.403 in 86 games.
• Making his second start for the A's Rookie-level Arizona League affiliate, A's No. 5 prospectJesus Luzardo, acquired from the Nationals last week, allowed one unearned run on four hits in four innings. The 19-year-old lefty compiled four strikeouts against zero walks, giving him a 23-to-1 strikeout-to-walk ratio in 20 1/3 innings to begin his career.
• Brewers No. 24 prospect Kodi Medeiros gave up four hits (all singles) over six scoreless innings in his best start this season for Class A Advanced Carolina. The 21-year-old lefty generated eight ground-ball outs and struck out three without permitting a walk in the outing, which marked his fourth straight completing six frames.
• Marlins No. 28 prospect Stone Garrett matched his season high with four hits (4-for-5) and drove in a season-high four runs to lead Class A Advanced Jupiter past Florida, 8-6. After a slow start to his season, the 21-year-old outfielder has recorded hits in four straight games.
• Starting opposite Bieber for Binghamton, Mets No. 8 prospectMarcos Molina turned in his best start at the Double-A level, tossing six scoreless innings of three-hit ball and striking out nine. The 22-year-old right-hander owns a 4.14 ERA through six starts since moving up to the Eastern League.
• Red Sox No. 3 prospect Michael Chavis filled out the box score for Double-A Portland, going 2-for-3 with a two-run homer, a double, three runs scored and two RBIs. He also walked twice in the contest. The homer was the 24th this season for the 21-year-old third baseman, and he's tallied exactly two hits in four straight contests.
• Astros No. 15 prospect J.D. Davis hit a pair of home runs, including a grand slam, in a five-RBI game for Triple-A Fresno. He's homered in back-to-back games for the Grizzlies, and he's slashing .323/.364/.677 with three homers and eight RBIs in seven games since being promoted from Double-A.

MILB Video - Title: Davis belts a grand slam - Url: http://www.milb.com/r/video?content_id=1652528383

• Yankees No. 14 prospectJorge Guzman, 21, piled up nine strikeouts over six scoreless innings in a no-decision for Class A Short Season Staten Island. The hard-throwing righty has been missing bats with ease this season, as Tuesday's performance gives him 49 strikeouts in 38 2/3 innings (11.4 K/9).