Parker will bat cleanup and play right field Wednesday for the Sky Sox. He has homered in back-to-back games and is hitting .306/.377/.574 with five home runs in 29 games this season.
The game can be viewed on MiLB.TV at 1:05 p.m. ET.
In addition to Nelson, other pitchers ranked in the Top 100 scheduled to start Wednesday are the Twins' Kohl Stewart (No. 36) and the Braves' Lucas Sims (No. 55). Fans can watch Stewart on MiLB.TV at 8 p.m.
Top prospect probables
Cody Anderson (Indians' No. 4), Akron at Erie
Tim Berry (Orioles' No. 8), Bowie at Altoona
Zachary Bird (Dodgers' No. 13), Great Lakes vs. Dayton
Clayton Blackburn (Giants' No. 8), Richmond at Harrisburg
Andrew Chafin (D-backs' No. 12), Mobile vs. Mississippi
Michael Clevinger (Angels' No. 12), Inland Empire at Bakersfield
Adam Conley (Marlins' No. 5), New Orleans vs. Iowa
Jacob deGrom (Mets' No. 13), Las Vegas at Salt Lake
Jason Hursh (Braves' No. 3), Mississippi at Mobile
Taylor Jungmann (Brewers' No. 8), Huntsville vs. Jackson
Branden Kline (Orioles' No. 16), Frederick at Potomac
Matt Magill (Dodgers' No. 12), Albuquerque vs. Sacramento
Cody Martin (Braves' No. 10), Gwinnett vs. Buffalo
Trevor May (Twins' No. 12), Rochester at Columbus
Jimmy Nelson (Brewers' No. 1), Nashville at Colorado Springs
Braulio Ortiz (White Sox No. 18), Winston-Salem vs. Myrtle Beach
Zach Petrick (Cardinals' No. 17), Memphis at Oklahoma City
Joely Rodriguez (Pirates' No. 20), Altoona vs. Bowie
Sal Romano (Reds' No. 15), Dayton at Great Lakes
Keyvius Sampson (Padres' No. 14), El Paso at Fresno
Angel Sanchez (Marlins' No. 16), Jacksonville at Montgomery
Lucas Sims (Braves' No. 1), Lynchburg vs. Carolina
Kohl Stewart (Twins' No. 4), Cedar Rapids at Quad Cities
Nick Tropeano (Astros' No. 17), Oklahoma City vs. Memphis
Austin Voth (Nationals' No. 16), Hagerstown at Hickory
Taylor Williams (Brewers' No. 16) at Kane County
Tom Windle (Dodgers' No. 7), Rancho Cucamonga vs. High Desert
Teddy Cahill is a reporter for MLB.com. Follow him on Twitter at @tedcahill. This story was not subject to the approval of Major League Baseball or its clubs.