Pipeline preview: Oakland's Puk seeks first pro win

Pipeline preview: Oakland's Puk seeks first pro win

Here's a look at top prospects to watch Wednesday in Minor League action:

Mejia streak watch: Indians No. 4 prospect Francisco Mejia aims to extend his 44-game hit streak as Lynchburg hosts Potomac at 6:30 p.m. ET.

Hitter to watch: Mickey Moniak (Phillies' No. 2), GCL Phillies vs. GCL Braves (12 p.m. ET)

The No. 1 pick in the 2016 Draft has done nothing but hit since making his professional debut. Moniak, the No. 32 overall prospect, went 2-for-5 with a double and a triple on Tuesday and has a hit in 13 of his past 14 games. The 18-year-old outfielder is hitting .326 and has collected 22 RBIs in 25 games.

Top Prospects: Moniak, PHI

Pitcher to watch: A.J. Puk (Athletics' No. 2), Class A Short-Season Vermont vs. Lowell (7:05 p.m. ET)

The 21-year-old left-hander is set to make his fifth professional start. Puk has struck out eight and given up four earned runs over the first 8 1/3 innings of his pro career. The No. 78 overall prospect has seen his pitch count increase in each outing and will look to take another step forward vs. Lowell.

Top Prospects: Puk, OAK

Duel of the Day: Joan Gregorio (Giants' No. 7) vs. Kyle Freeland (Rockies' No. 8), Sacramento at Albuquerque (9:05 p.m. ET on MiLB.TV)

Gregorio is hoping August will be the month when he turns things around. The Giants No. 7 prospect has seen his ERA rise every month this season, culminating in a 6.08 ERA in five July starts. The right-hander did throw seven innings of one-run ball on July 22, but then gave up three runs in five innings in his final July start. Over his past two starts, Gregorio has struck out 19 and walked none.

Freeland has also been tallying up the strikeouts lately, totaling 14 over his past 12 innings. The left-hander has given up two earned runs in each of his past two starts and is 2-2 since his promotion to Triple-A.

Top Prospects: Freeland, COL

Wednesday's Top 100 probables:
No. 6 Julio Urias (Dodgers' No. 1), Oklahoma City vs. Round Rock (8:05 p.m. ET on MiLB.TV)
No. 43 Josh Hader (Brewers' No. 4), Colorado Springs vs. Nashville (9:05 p.m. ET on MiLB.TV)
No. 73 Kolby Allard (Braves' No. 4), Rome vs. Lexington (1 p.m. ET on MiLB.TV)

More top prospect probables:
Austin Voth (Nationals' No. 11), Syracuse vs. Buffalo (Triple-A)
Rob Whalen (Braves' No. 20), Gwinnett vs. Charlotte (Triple-A)
Mike Clevinger (Indians' No. 5) vs. Steven Brault (Pirates' No. 16), Columbus vs. Indianapolis (Triple-A)
Dietrich Enns (Yankees' No. 27), Scranton/Wilkes-Barre at Lehigh Valley (Triple-A)
Mike Mayers (Cardinals' No. 29), Memphis vs. Omaha (Triple-A)
Sam Howard (Rockies' No. 21), Hartford at Trenton (Double-A)
Brandon Woodruff (Brewers' No. 25) vs. Jake Esch (Marlins' No. 11), Biloxi at Jacksonville (Double-A)
Jalen Beeks (Red Sox's No. 30), Portland vs. Erie (Double-A)
Sam Coonrod (Giants' No. 5) vs. Brandon Waddell (Pirates' No. 23), Richmond at Altoona (Double-A)
Lucas Sims (Braves' No. 14) vs. Sal Romano (Reds' No. 17), Mississippi at Pensacola (Double-A)
Felix Jorge (Twins' No. 24) vs. Josh Taylor (D-backs' No. 27), Chattanooga at Mobile (Double-A)
Jake Junis (Royals' No. 10), Northwest Arkansas vs. Arkansas (Double-A)
Ryan Yarbrough (Mariners' No. 13), Jackson at Montgomery (Double-A)
Connor Sadzeck (Rangers' No. 12), Frisco vs. Midland (Double-A)
Dinelson Lamet (Padres' No. 18), San Antonio at Corpus Christi (Double-A)
Vicente Campos (D-backs' No. 4), Mobile vs. Chattanooga (Double-A)
Trevor Clifton (Cubs' No. 8), Myrtle Beach at Frederick (Class A Advanced)
Matt Hall (Tigers' No. 23), Lakeland vs. Tampa (Class A Advanced)
Dillon Peters (Marlins' No. 15), Jupiter vs. St. Lucie (Class A Advanced)
Brad Keller (D-backs' No. 14), Visalia at Modesto (Class A Advanced)
Jordan Johnson (Giants' No. 9), San Jose at Bakersfield (Class A Advanced)
Franklyn Kilome (Phillies' No. 9) vs. Cody Poteet (Marlins' No. 16), Lakewood at Greensboro (Class A)
Jacob Nix (Padres' No. 15), Fort Wayne at South Bend (Class A)
Ronnie Williams (Cardinals' No. 21), Peoria vs. Quad Cities (Class A)
Juan Hillman (Indians' No. 12) vs. Luis Escobar (Pirates' No. 19), Mahoning Valley at West Virginia (Class A Short Season)

William Boor is a reporter for MLB.com. Follow him on Twitter at @wboor. This story was not subject to the approval of Major League Baseball or its clubs.