Here's a look at top prospects to watch in today's Minor League action:
Hitter to watch: Jose Siri (Reds' No. 24), Dayton at Lansing (7:05 p.m. ET)
Siri enters Class A Dayton's game with a 30-game hitting streak, the longest in the Minor Leagues this season. One of three Midwest League players to have ever accomplished the feat, the 22-year-old center fielder is hitting .348 with 10 home runs, 24 RBIs and 23 runs scored during his streak. Overall he's slashed .293/.337/.517 in 91 games, and he's the only Minor Leaguer with at least 16 home runs and 29 steals this season.

MILB Video - Title: Siri extends streak to 30 games - Url: http://www.milb.com/r/video?content_id=1646098883

Pitcher to watch:Ryan Yarbrough (Rays' No. 24), Durham at Buffalo (7:05 p.m. ET on MiLB.TV)
Yarbrough struck out a career-high 13 batters in his last start for Triple-A Durham. Working six innings, the 25-year-old left-hander allowed two earned run on four hits while throwing 62 of his 91 pitches for strikes. He's 5-0 in his last six starts for the Bulls, and 10-4 in 19 starts this season, during which he's pitched to a 3.52 ERA with 118 strikeouts and 29 walks in 115 innings.

Duel of the day: Michael Kopech (White Sox No. 3) vs. Kohl Stewart (Twins' No. 9), Birmingham at Chattanooga (7:15 p.m. ET on MiLB.TV)
No. 12 on MLB Pipeline's Top 100 Prospects list, Kopech tossed eight scoreless innings for a win on July 20, allowing just four hits and striking out eight. More important was the fact he didn't walk a batter, the first time all season the 21-year-old right-hander has done that. Kopech leads the White Sox with his .197 batting average against, and his 114 strikeouts puts him second. He's struck out an impressive 11.1 per-nine-innings this year.

Stewart, meanwhile, is 4-0 with a 1.93 ERA in five starts since returning from a stint on the disabled list for left knee tendinitis. While the 21-year-old righty has never missed the number of bats scouts expected he would after being taken fourth overall in the 2013 Draft, he has continued to post excellent ground-ball rates while making a steady climb up the ladder.

Wednesday's Top 100 prospect probables
No. 13 Walker Buehler (Dodgers' No. 1), Oklahoma City vs. Reno (8:05 p.m. ET on MiLB.TV)
No. 24 Triston McKenzie (Indians' No. 2), Lynchburg vs. Frederick (6:30 p.m. ET)
No. 53 Jack Flaherty (Cardinals' No. 3) vs. Osmer Morales (Angels' No. 28), Memphis vs. Salt Lake (8:05 p.m. ET on MiLB.TV)
No. 59 Reynaldo Lopez (White Sox No. 6) vs. Ryan Merritt (Indians' No. 22), Charlotte vs. Columbus (7:05 p.m. ET on MiLB.TV)
No. 62 Chance Adams (Yankees' No. 3), Scranton/Wilkes-Barre at Norfolk (7:05 p.m. ET on MiLB.TV)
No. 89 Tyler Mahle (Reds' No. 5), Louisville at Syracuse (noon ET on MiLB.TV)
More top prospect probables
Eric Skoglund (Royals' No. 5), Omaha at Albuquerque (Triple-A)
Clay Holmes (Pirates' No. 18), Indianapolis vs. Rochester (Triple-A)
Myles Jaye (Tigers' No. 23), Toledo vs. Pawtucket (Triple-A)
Yohander Mendez (Rangers' No. 3) vs. Casey Meisner (A's No. 26), (Double-A)
Sean Reid-Foley (Blue Jays' No. 6), New Hampshire vs. Portland (Double-A)
Ryan Castellani (Rockies' No. 6), Hartford at Trenton (Double-A)
Eric Lauer (Padres' No. 8) vs. Framber Valdez (Astros' No. 19), San Antonio at Corpus Christi (Double-A)
Brad Keller (D-backs' No. 13) vs. Jake Jewell (Angels' No. 24), Jackson vs. Mobile
Trevor Richards (Marlins' No. 18), Jacksonville at Mississippi (Double-A)
Corey Oswalt (Mets' No. 29), Binghamton at Akron (Double-A)
Mike Shawaryn (Red Sox's No. 8), Salem at Wilmington (Class A Advanced)
Junior Fernandez (Cardinals' No. 11), Palm Beach at Tampa (Class A Advanced)
Dane Dunning (White Sox No. 11), Winston-Salem at Buies Creek (Class A Advanced)
Justin Steele (Cubs' No. 12), Myrtle Beach vs. Carolina (Class A Advanced)
Gage Hinsz (Pirates' No. 13), Bradenton at St. Lucie (Class A Advanced)
Touki Toussaint (Braves' No. 15), Florida at Jupiter (Class A Advanced)
Spencer Turnbull (Tigers' No. 22), Lakeland vs. Fort Myers (Class A Advanced)
Matt Krook (Giants' No. 25), San Jose vs. Modesto (Class A Advanced)
Edgar Garcia (Phillies' No. 28), Clearwater vs. Daytona (Class A Advanced)
Juan Hillman (Indians' No. 18) vs. Bryan Hudson (Cubs' No. 30), Lake County at South Bend (Class A)
Yennsy Diaz (Blue Jays' No. 25), Lansing vs. Daytona (Class A)
Chris Rodriguez (Angels' No. 7), Orem vs. Billings (Rookie)
Kyle Muller (Braves' No. 13), Danville at Kingsport (Rookie)