Coming off his best offensive game since he was traded to the Yankees, McKinney will look to parlay that into another strong showing. The outfielder went 3-for-4 with two RBIs on Thursday and is hitting .320 through his first seven games with his new club.
Sheffield, the No. 92 overall prospect, is looking to make a strong first impression with his new club after being dealt to the Yankees at the trade deadline. The lefty comes to the Yankees' organization with a 3.59 ERA in 19 starts this season and has given up three earned runs or fewer in six consecutive outings.
Harris is looking to begin August the same way he finished July. The Blue Jays' prospect gave up one run in 7 2/3 innings the last time he took the mound and gave up two earned runs or fewer in five of six July starts. The right-hander was promoted to Class A Advanced on July 23 and is 0-1 in two starts.
After a string of excellent starts, Medeiros has been hit hard over his last two appearances. The lefty has given up six earned runs on eight hits over his last 7 1/3 innings. However, from late May to early July, the 20-year-old had a stretch in which he allowed two earned runs or fewer in six of seven starts. He's lacked consistency at times, but Medeiros has also shown he has what it takes to get batters out.
Friday's Top 100 probables:
No. 92 Justus Sheffield (Yankees' No. 7), Tampa vs. Daytona (Class A Advanced)
More top prospect probables:
Adam Plutko (Indians' No. 14), Columbus vs. Louisville (Triple-A) Jacob Faria (Rays' No. 5), Durham vs. Gwinnett (Triple-A) Alec Mills (Royals' No. 9), Omaha vs. Memphis (Triple-A) Freddy Peralta (Brewers' No. 21), Colorado Springs vs. Nashville (Triple-A)
Harrison Musgrave (Rockies' No. 26), Albuquerque vs. Sacramento (Triple-A) Robert Gsellman (Mets' No. 14), Las Vegas vs. Fresno (Triple-A) Rob Kaminsky (Indians' No. 20), Akron vs. Portland (Double-A) Taylor Guerrieri (Rays' No. 13), Montgomery vs. Tennessee (Double-A)
Stephen Gonsalves (Twins' No. 5), Chattanooga vs. Jacksonville (Double-A)
Heath Fillmyer (Athletics' No. 19), Midland vs. Corpus Christi (Double-A)
Max Povse (Braves' No. 19), Mississippi vs. Mobile (Double-A)
Jordan Guerrero (White Sox No. 10), Birmingham vs. Jackson (Double-A)
Tyler Mahle (Reds' No. 6), Pensacola vs. Biloxi (Double-A)
P.J. Conlon (Mets' No. 28), St. Lucie vs. Bradenton (Class A Advanced)
Jon Harris (Blue Jays' No. 6), Dunedin vs. Brevard County (Class A Advanced)
Kodi Medeiros (Brewers' No. 13), Brevard County vs. Dunedin (Class A Advanced)
Erick Fedde (Nationals' No. 5), Potomac vs. Wilmington (Class A Advanced)
Jake Jewell (Angels' No. 14), Inland Empire vs. Visalia (Class A Advanced)
Alex Young (D-backs' No. 5), Visalia vs. Inland Empire (Class A Advanced)
Peter Lambert (Rockies' No. 12), Asheville vs. Augusta (Class A)
Ryan Borucki (Blue Jays' No. 17), Lansing vs. Bowling Green (Class A)
Yadier Alvarez (Dodgers' No. 7), Great Lakes vs. Lake County (Class A)
Gage Hinsz (Pirates' No. 21), West Virginia vs. Delmarva (Class A)
Nick Neidert (Mariners' No. 4), Cedar Rapids vs. Clinton (Class A)
Oscar De La Cruz (Cubs' No. 7), South Bend vs. Fort Wayne (Class A)
Jesus Castillo (Angels' No. 28), Burlington vs. Wisconsin (Class A)
Kyle Funkhouser (Tigers' No. 6), Connecticut vs. Batavia (Class A Short Season)
Dylan Cease (Cubs' No. 4), Eugene vs. Vancouver (Class A Short Season)
Eric Lauer (Padres' No. 9), Tri-City vs. Boise (Class A Short Season)
Jose Espada (Blue Jays' No. 20), Bluefield vs. Danville (Rookie)
Ian Kahaloa (Reds' No. 24), Billings vs. Ogden (Rookie)
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.