Mancini has hit well at every level of the Minor Leagues, and this year is no exception. The first baseman was named the Orioles' organization's Player of the Year after hitting .341 across two levels in 2015.
And in 2016, it's been more of the same.
The 24-year-old began the year in Double-A, hitting .302 in 17 games before promptly being promoted to Triple-A, where he is batting .299 with 11 home runs through 93 games.
The rest of the best performances from top prospects Wednesday:
• Lewis Brinson (Brewers' No. 2, No. 21 overall) continues to impress his new teammates. Brinson went 4-for-4 in his debut with Triple-A Colorado Springs on Tuesday and followed that up with a grand slam as part of a 2-for-4 effort in his second game.
• Jorge Mateo (Yankees' No. 3, No. 25 overall) may be heating up. The 21-year-old went 3-for-5 with a homer for Class A Advanced Tampa and has hits in eight of his past 10 games. The homer, a solo shot, gave Mateo his 40th RBI of the season, tying his career high, which he set last season. His seven homers are also a career best.
• Kolby Allard (Braves' No. 4, No. 73 overall) bounced back from a rough outing and spun a gem for Class A Rome. The young lefty set a career high with 11 strikeouts while giving up one run on three hits in 6 1/3 innings.
• Zack Collins (White Sox No. 2, No. 95 overall) notched his second three-hit game as a professional. Chicago's first-round selection doubled and collected an RBI as part of a 3-for-4 day for Class A Advanced Salem.
• Harold Ramirez (Blue Jays' No. 5) made quite the impact in his debut with Double-A New Hampshire. Playing in his first game since being traded from Pittsburgh to Toronto, Ramirez went 3-for-4 with a double and an RBI. The outfielder is hitting .311 with 50 RBIs through 99 games in his first season at the Double-A level.
• Ronnie Williams (Cardinals' No. 22) spun another good start for Class A Peoria. Williams threw 6 2/3 innings, struck out seven, allowed five hits and gave up one run. The outing dropped his ERA to 1.35, and the right-hander has now allowed one earned run or fewer in five of his eight starts.
• Cubs' No. 8 prospect Trevor Clifton's longest start of the season was a good one. The 21-year-old carried a no-hitter into the eighth inning for Class A Advanced Myrtle Beach, but a leadoff double forced his exit from the game. Clifton threw 68 of his 97 pitches for strikes and gave up one hit in seven scoreless innings while striking out six.
"It really came down to pitching with the fastball," Clifton told MiLB.com. "I mixed in a changeup and curveball now and then, but most of my strikeouts came off fastballs. It was really working well ... We were staying away on the outside corner with some guys, then going in."
• Mariners' No. 8 prospect D.J. Peterson collected a career-high five hits, including an inside-the-park home run for Triple-A Tacoma. Peterson also drove in a trio of runs as part of a 5-for-5 game and is hitting .306 through 32 Triple-A games.
• Ryan Yarbrough (Mariners' No. 13) extended his scoreless streak to 14 innings after posting six more zeros for Double-A Jackson. Yarbrough gave up just one hit, struck out six and retired the final 11 batters he faced.
• Dillon Peters (Marlins' No. 15) continues to thrive for Class A Advanced Jupiter. The lefty gave up three hits and struck out four in six scoreless innings, the latest in a string of impressive starts. Peters, who hasn't allowed a run over his past 17 innings, has allowed one earned run or fewer in five consecutive outings.
"My command was a little above average," Peters told MiLB.com. "There were a lot more strikes than what 'above average' looks like, but they were just chasing some balls that were up in the zone. I was getting foul balls, but I really wasn't living down at the knees like I tried to do all season."
• Nationals' No. 11 prospect Austin Voth got back on track with seven innings of one-run ball for Triple-A Syracuse. Voth struck out four and walked three while allowing six hits in an important rebound game. After giving up 10 earned runs over his past two starts, a quality start was just what Voth needed.
• Dylan Cozens (Phillies' No. 7) put up video game numbers in an offensive outburst for Double-A Reading. Cozens set career highs in home runs and RBIs as he went 4-for-5 with three homers and seven driven in.
• Phillies' No. 19 Tom Eshelman was in complete control all night for Double-A Reading. Eshelman threw 62 of his 87 pitches for strikes in six scoreless innings. The right-hander didn't walk a batter, struck out five and gave up three hits.
• Austin Franklin (Rays' No. 23) put together another strong performance for the Rookie-level GCL Rays. The third-round selection threw five no-hit innings on July 16 and nearly did it again this time out, giving up just one hit while striking out seven in five scoreless innings.
• Sal Romano has now gone 22 innings without allowing an earned run after throwing six scoreless for Double-A Pensacola. The Reds' No. 17 prospect put together another quality start as he didn't walk a single batter and struck out six. He allowed six hits.
• Royals' No. 3 prospect Jorge Bonifacio drove in a season-high five runs for Triple-A Omaha. Bonifacio also hit his 16th homer as part of his 2-for-5 evening. The 23-year-old is batting .278 in his first Triple-A season and has set a career high with 69 RBIs through 105 games.