Hitter to watch: Jorge Mateo (Yankees' No. 3),Tampa vs. Lakeland (1 p.m. ET)
The No. 25 overall prospect is hitting just .259 this season, but he has already set a career high in homers and tied his career high in RBIs. Mateo hit his seventh homer of the season and collected his 40th RBI as part of a 3-for-5 game Wednesday. The 21-year-old scuffled in June and July but has picked it up lately with hits in eight of his past 10 games and hits in four of his past nine at-bats.
Garrett, the No. 55 overall prospect, failed to get out of the fifth inning for the first time all season in his last start. Garrett was tagged for five runs, a season high, and walked six. All those numbers are outliers for the 24-year-old who has a 2.24 ERA through 19 games this season. After that forgettable outing, Garrett gets a chance to redeem himself and improve upon his 7-5 record against Toledo.
Johnson got hit hard in his first start back with Pawtucket on July 24, but the 25-year-old rounded back into form and threw six scoreless innings on the 29th. Johnson showed excellent command in his last start, striking out five and throwing 52 of his 88 pitches for strikes. Now that he's healthy again, Johnson looks to continue his development and further extend his scoreless streak.
Mejia will be making his first start with the Twins organization and being traded from the Giants in exchange for Eduardo Nunez. The lefty is 7-3 with a 2.81 ERA through 17 starts this season and posted a 3.09 ERA in July.
Thursday's Top 100 probables:
No. 55 Amir Garrett (Reds' No. 2), Louisville vs. Toledo (Triple-A)
No. 58 Sean Newcomb (Braves' No. 3), Mississippi vs. Pensacola (Double-A)
More top prospect probables:
Brian Johnson (Red Sox No. 7), Pawtucket vs. Rochester (Triple-A)
Adalberto Mejia (Twins' No. 11), Rochester vs. Pawtucket (Triple-A) A.J. Cole (Nationals' No. 15), Syracuse vs. Buffalo (Triple-A) Steven Brault (Pirates' No. 16), Indianapolis vs. Columbus (Triple-A) Ryan Merritt (Indians' No. 30), Columbus vs. Indianapolis (Triple-A)
Brady Rodgers (Astros' No. 25), Fresno vs. Las Vegas (Triple-A) Seth Lugo (Mets' No. 27), Las Vegas vs. Fresno (Triple-A) Jharel Cotton (Athletics' No. 16), Nashville vs. Colorado Springs (Triple-A) Ty Blach (Giants' No. 23), Sacramento vs. Albuquerque (Triple-A) German Marquez (Rockies' No. 7), Hartford vs. Trenton (Double-A)
Tyler Beede (Giants' No. 2), Richmond vs. Altoona (Double-A)
Tyler Eppler (Pirates' No. 25), Altoona vs. Richmond (Double-A) Jorge Lopez (Brewers' No. 15), Biloxi vs. Jacksonville (Double-A)
David Hess (Orioles' No. 24), Bowie vs. Reading (Double-A)
Felix Jorge (Twins' No. 24), Chattanooga vs. Mobile (Double-A) Josh Taylor (D-backs' No. 27), Mobile vs. Chattanooga (Double-A) Paul Blackburn (Mariners' No. 17), Jackson vs. Montgomery (Double-A)
Austin Gomber (Cardinals' No. 18), Springfield vs. Arkansas (Double-A) Victor Alcantara (Angels' No. 8), Arkansas vs. Springfield (Double-A)
Michael Mader (Marlins' No. 24), Jupiter vs. St. Lucie (Class A Advanced)
Jon Harris (Blue Jays' No. 6), Dunedin vs. Clearwater (Class A Advanced)
Thad Lowry (White Sox No. 22), Winston-Salem vs. Frederick (Class A Advanced)
Luis Lugo (Indians' No. 28), Lynchburg vs. Salem (Class A Advanced)
Trey Ball (Red Sox No. 14), Salem vs. Lynchburg (Class A Advanced)
Foster Griffin (Royals' No. 16), Wilmington vs. Potomac (Class A Advanced) Enyel De Los Santos (Padres' No. 16), Lake Elsinore vs. Bakersfield (Class A Advanced)
Justin Donatella (D-backs' No. 28), Visalia vs. Inland Empire (Class A Advanced)
Tanner Rainey (Reds' No. 26), Dayton vs. West Virginia (Class A)
Cody Poteet (Marlins' No. 16), Greensboro vs. Kannapolis (Class A)
Genesis Cabrera (Rays' No. 22), Bowling Green vs. Lansing (Class A)
Angel Perdomo (Blue Jays' No. 15), Lansing vs. Bowling Green (Class A)
Brian Gonzalez (Orioles' No. 19), Delmarva vs. West Virginia (Class A)
Mitchell White (Dodgers' No. 30), Great Lakes vs. Lake County (Class A)
Adonis Medina (Phillies' No. 17), Williamsport vs. Staten Island (Class A Short Season)
Logan Shore (Athletics' No. 14), Vermont vs. Lowell (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.