It seems like every time he takes the mound, Kolby Allard keeps showing why the Braves drafted him No. 14 overall two years ago.
The 19-year-old left-hander, already pitching for Double-A Mississippi, has a 1.29 ERA through his first four starts of 2017 after tossing five scoreless innings against the Montgomery Biscuits on Sunday. Allard scattered five hits, walked one and struck out five.
It's that promise he's showing that's made him Atlanta's No. 3 prospect, the No. 49 overall prospect and the No. 4 left-handed pitching prospect, according to MLBPipeline.com's rankings.
Allard has only allowed three earned runs over his four outings, spanning 21 innings. Two of Allard's four outings have been scoreless. The Braves have handled him cautiously, not rushing him along as he's had some back issues in the past, and it's been paying off so far this season.
The rest of the best performances from top prospects Sunday
• No. 3 overall prospectAmed Rosario (Mets' No. 1 prospect) notched his second consecutive three-hit game for Triple-A Las Vegas. The 21-year-old shortstop finished 3-for-5 with a triple, an RBI and a run scored against the Sacramento River Cats. He has had multiple hits in more than half the games he's played this season -- nine of 17.

MILB Video - Title: Watch: Mets' Rosario rips triple - Url: http://www.milb.com/r/video?content_id=1317865383

• At Class A Lansing, No. 31 overall prospect Vladimir Guerrero Jr. (Blue Jays' No. 1) had himself a game, too. The younger Vlad went 2-for-3 with a two-run double against the Bowling Green Hot Rods, also walking twice and scoring two runs. The 18-year-old third baseman is now hitting .309 with a .441 on-base percentage 16 games into his first full season in the Minors.
• No. 65 overall prospectAnthony Alford (Blue Jays' No. 3) now has a seven-game hitting streak for Double-A New Hampshire, which he extended with a third-inning RBI single on Sunday. But he wasn't done there -- the 22-year-old outfielder also slugged his second home run of the season, a two-run shot in the fifth. Alford finished the game 2-for-4, his fifth multi-hit game in his last six games and his ninth in 13 games this season. He's been scorching hot at the plate this season, now hitting .469 with a .653 slugging percentage.

MILB Video - Title: Watch: Alford rips a two-run homer - Url: http://www.milb.com/r/video?content_id=1316505183

• No. 67 overall prospectJorge Alfaro (Phillies' No. 3) brought his bat to Sunday's game for Triple-A Lehigh Valley. The game's third-ranked catching prospect went 3-for-4 and accounted for the only run in the IronPigs' 1-0 win over Toledo when he mashed a homer in the fourth inning. It was just his second long ball of the young season, but his fifth multi-hit game, and the 23-year-old is now hitting .357 and slugging .554.

MILB Video - Title: Watch: Alfaro slugs a homer - Url: http://www.milb.com/r/video?content_id=1315654583

• No. 84 overall prospectChristian Arroyo (Giants' No. 2) continued his hot start to the season with a 4-for-6 game at the plate Sunday for Triple-A Sacramento, including the game-winning single in the bottom of the 10th inning. The 21-year-old shortstop is now hitting .446 and slugging .692 in 16 games, half of them multi-hit games.

MILB Video - Title: Watch: Arroyo delivers game winning hit - Url: http://www.milb.com/r/video?content_id=1316864083

• Matt Thaiss (Angels' No. 2) recorded his first four-hit game as a pro for Class A Advanced Inland Empire. Thaiss, the Angels' first-round pick in 2016, went 4-for-5 with his third homer of the year in an 11-5 loss to Rancho Cucamonga.
• Ronnie Dawson (Astros' No. 19) showed off his power-speed combination for Class A Quad Cities. The 21-year-old outfielder hit his second home run of 2017 as part of a 3-for-3 game, stole his fourth base of the year and scored two runs. It was his second three-hit game in the past week.
• Ryan Cordell (Brewers No. 16), who Milwaukee acquired as part of the trade that sent Jonathan Lucroy to the Rangers last year, notched his first four-hit game with his new organization on Sunday. The 25-year-old outfielder went 4-for-4 with a double and his fourth homer of the season for Triple-A Colorado Springs.

MILB Video - Title: Watch: Cordell rips a solo homer - Url: http://www.milb.com/r/video?content_id=1316589383

• Arizona's top pitching prospect Anthony Banda (D-backs' No. 1) showed off his stuff in a 5 2/3-inning, 11-strikeout performance for Triple-A Reno. He allowed three runs and earned his second win of the season in a 4-3 victory over El Paso.

MILB Video - Title: Watch: Banda records 11th strikeout - Url: http://www.milb.com/r/video?content_id=1316512883

• Will Smith, the Dodgers' No. 14 prospect, notched his first multi-homer game in the Minors for Class A Advanced Rancho Cucamonga. Smith went 2-for-3 with homers in the first and eighth innings and recorded a career-high four RBIs.
• Connor Sadzeck (Rangers' No. 10) took a no-hitter into the eighth inning for Double-A Frisco. Through seven innings, the 25-year-old right-hander held Corpus Christi hitless and racked up 10 strikeouts despite throwing just 74 pitches. Hooks catcher Garrett Stubbs, Houston's No. 11 prospect and baseball's 10th-ranked catching prospect, ended the no-hit bid with a leadoff single in the eighth. Sadzeck finished with 7 2/3 innings pitched and three runs allowed to get the win.

MILB Video - Title: Watch: Sadzeck whiffs 10th hitter - Url: http://www.milb.com/r/video?content_id=1316600283

• Ryan O'Hearn (Royals' No. 8) homered for the third time in four games for Triple-A Omaha in the Storm Chasers' 4-2 win over New Orleans. It was his fifth homer of the season. The 23-year-old first baseman/outfielder also doubled and finished 2-for-4 on the day, which raised his season batting average to .317. O'Hearn now has multiple hits in three straight games and in five of his last six.

MILB Video - Title: Watch: O'Hearn hits a solo shot - Url: http://www.milb.com/r/video?content_id=1316507983