Who Should I Trade?
Isaac Mattson for Mason Black (2026)
See if your team wins or loses with this trade View Trade Analyzer
Experts' Pick | ||
| Isaac Mattson RP - PIT  | Mason Black SP,RP - KC  | |
Expert |
100% Recommended by 1 of 1 experts |
0% Recommended by 0 of 1 experts |
| Rankings | ||
| Rest of Season | ‐ | ‐ |
| VBR | # 709 | # 1008 |
| Projections | ||
| Strikeouts | 28 | 22 |
| Wins | 2 | 1 |
| Saves | 0 | 0 |
| ERA | 4.30 | 4.78 |
| WHIP | 1.43 | 1.49 |
| Misc | ||
| Injury Alert | MiLB | - |
| Expert Ranks | ||
| Kevin Spinelli KevScores | # 406 | ‐ |
| Isaac Mattson RP - PIT | Mason Black SP,RP - KC | |
| 2026 Stats | ||
| Games Played | 21 | 5 |
| Games Started | 0 | 0 |
| Innings Pitched | 19.2 | 6.2 |
| Wins | 0 | 0 |
| Losses | 0 | 0 |
| Saves | 0 | 0 |
| Blown Saves | 2 | 0 |
| Holds | 7 | 0 |
| Hits Allowed | 19 | 7 |
| Earned Runs | 9 | 2 |
| Home Runs Allowed | 0 | 1 |
| Strikeouts | 15 | 7 |
| Walks | 10 | 3 |
| ERA | 4.12 | 2.70 |
| WHIP | 1.47 | 1.50 |
| Isaac Mattson RP - PIT | Mason Black SP,RP - KC | |
| 2026 Projections | ||
| Games Played | 35 | 28 |
| Games Started | 0 | 0 |
| Innings Pitched | 31.6 | 27.0 |
| Wins | 2 | 1 |
| Losses | 2 | 2 |
| Saves | 0 | 0 |
| Blown Saves | 0 | 0 |
| Holds | 4 | 1 |
| Hits Allowed | 29 | 28 |
| Earned Runs | 15 | 14 |
| Home Runs Allowed | 4 | 4 |
| Strikeouts | 28 | 22 |
| Walks | 15 | 11 |
| ERA | 4.30 | 4.78 |
| WHIP | 1.43 | 1.49 |
| Isaac Mattson RP - PIT | Mason Black SP,RP - KC | |
| News | ||
| Isaac Mattson has been sent to Triple-A Indianapolis. Nate Miller - FantasyPros Wed, May 20th | The Royals recalled Mason Black from Triple-A Omaha. Ari Koslow Wed, May 27th | |
| Isaac Mattson pitched a perfect eighth inning on Sunday, including a strikeout, for his fifth hold of the season as the Pirates defeated the Rays, 6-3. David Leisering Sun, Apr 19th | The Royals optioned Mason Black to Triple-A Omaha. Ari Koslow Tue, May 5th | |
| The Royals have recalled right-hander Mason Black from Triple-A Omaha. Brenton Kemp Sun, Apr 19th | ||
| Righthander Mason Black has been optioned to Triple-A Omaha by the Kansas City Royals. David Leisering Tue, Mar 17th | ||
| Notes | ||
| There are no recent notes for these players | ||
| Isaac Mattson RP - PIT | Mason Black SP,RP - KC | |||||
| Date | Opp | Opp Pitcher | VBR | Opp | Opp Pitcher | VBR |
|---|---|---|---|---|---|---|
| Thu, Mar 26th | @ NYM | Freddy Peralta (3-4) | #28 | |||
| Sat, Mar 28th | @ NYM | David Peterson (3-5) | #117 | @ ATL | Reynaldo Lopez (2-1) | #108 |
| Sun, Mar 29th | @ NYM | Nolan McLean (2-4) | #29 | @ ATL | Grant Holmes (3-2) | #139 |
| Mon, Mar 30th | @ CIN | Chase Burns (7-1) | #25 | vs MIN | Simeon Woods Richardson (0-7) | #222 |
| Tue, Mar 31st | @ CIN | Brandon Williamson (2-3) | #370 | |||
| Wed, Apr 1st | @ CIN | Andrew Abbott (4-3) | #99 | vs MIN | Joe Ryan (3-3) | #15 |
| Fri, Apr 3rd | vs BAL | Kyle Bradish (2-6) | #43 | |||
| Sat, Apr 4th | vs BAL | Shane Baz (2-5) | #84 | vs MIL | Logan Henderson (2-1) | #57 |
| Sun, Apr 5th | vs BAL | Chris Bassitt (4-3) | #125 | vs MIL | Kyle Harrison (6-1) | #63 |
| Mon, Apr 6th | vs SD | German Marquez (3-2) | #330 | @ CLE | Tanner Bibee (0-7) | #38 |
| Tue, Apr 7th | vs SD | Nick Pivetta (1-2) | #138 | @ CLE | Gavin Williams (8-3) | #27 |
| Wed, Apr 8th | vs SD | Michael King (4-4) | #35 | @ CLE | Joey Cantillo (4-2) | #106 |
| Fri, Apr 10th | @ CHC | Shota Imanaga (4-6) | #24 | vs CWS | Davis Martin (8-1) | #79 |
| Sat, Apr 11th | @ CHC | Edward Cabrera (3-2) | #70 | vs CWS | Erick Fedde (0-5) | #373 |
| Sun, Apr 12th | @ CHC | Jameson Taillon (2-4) | #107 | vs CWS | Grant Taylor (1-0) | #53 |
| Mon, Apr 13th | vs WSH | Cade Cavalli (3-3) | #87 | |||
| Tue, Apr 14th | vs WSH | PJ Poulin (3-0) | #237 | @ DET | Framber Valdez (2-4) | #26 |
| Wed, Apr 15th | vs WSH | Jake Irvin (2-4) | #203 | @ DET | Jack Flaherty (0-7) | #62 |
| Thu, Apr 16th | vs WSH | Foster Griffin (6-2) | #88 | @ DET | Keider Montero (2-3) | #201 |
| Fri, Apr 17th | vs TB | Nick Martinez (5-1) | #81 | @ NYY | Cam Schlittler (7-2) | #36 |
| Sat, Apr 18th | vs TB | Drew Rasmussen (4-2) | #21 | @ NYY | Will Warren (6-1) | #60 |
| Sun, Apr 19th | vs TB | Shane McClanahan (5-2) | #22 | @ NYY | Ryan Weathers (2-3) | #66 |
| Tue, Apr 21st | @ TEX | Kumar Rocker (2-5) | #103 | vs BAL | Shane Baz (2-5) | #84 |
| Wed, Apr 22nd | @ TEX | Jack Leiter (2-4) | #76 | vs BAL | Chris Bassitt (4-3) | #125 |
| Thu, Apr 23rd | @ TEX | Jacob deGrom (3-4) | #8 | |||
| Fri, Apr 24th | @ MIL | Brandon Woodruff (2-1) | #56 | vs LAA | Yusei Kikuchi (0-3) | #155 |
| Sat, Apr 25th | @ MIL | Jacob Misiorowski (5-2) | #18 | vs LAA | Walbert Urena (2-4) | #421 |
| Sun, Apr 26th | @ MIL | Kyle Harrison (6-1) | #63 | vs LAA | Reid Detmers (2-5) | #41 |
| Mon, Apr 27th | vs STL | Dustin May (3-6) | #85 | |||
| Tue, Apr 28th | vs STL | Kyle Leahy (5-3) | #162 | @ ATH | Aaron Civale (5-2) | #219 |
| Wed, Apr 29th | vs STL | Andre Pallante (5-4) | #163 | @ ATH | Luis Severino (2-6) | #146 |
| Thu, Apr 30th | vs STL | Hunter Dobbins (0-0) | #198 | @ ATH | Jeffrey Springs (3-6) | #111 |
| Fri, May 1st | vs CIN | Brady Singer (2-5) | #143 | @ SEA | Bryan Woo (5-3) | #6 |
| Sat, May 2nd | vs CIN | Rhett Lowder (3-3) | #206 | @ SEA | Emerson Hancock (4-2) | #91 |
| Sun, May 3rd | vs CIN | Chase Burns (7-1) | #25 | @ SEA | Luis Castillo (1-5) | #46 |
| Tue, May 5th | @ ARI | Eduardo Rodriguez (5-1) | #112 | vs CLE | Gavin Williams (8-3) | #27 |
| Wed, May 6th | @ ARI | Michael Soroka (7-2) | #67 | vs CLE | Joey Cantillo (4-2) | #106 |
| Thu, May 7th | @ ARI | Zac Gallen (3-4) | #71 | vs CLE | Slade Cecconi (3-5) | #105 |
| Fri, May 8th | @ SF | Robbie Ray (3-6) | #83 | vs DET | Keider Montero (2-3) | #201 |
| Sat, May 9th | @ SF | Landen Roupp (5-5) | #61 | vs DET | Burch Smith | |
| Sun, May 10th | @ SF | Tyler Mahle (1-7) | #119 | vs DET | Brenan Hanifee | |
| Tue, May 12th | vs COL | Michael Lorenzen (2-7) | #427 | @ CWS | Erick Fedde (0-5) | #373 |
| Wed, May 13th | vs COL | Jose Quintana (2-3) | #425 | @ CWS | Noah Schultz (2-4) | #221 |
| Thu, May 14th | vs COL | Chase Dollander (3-3) | #340 | @ CWS | Anthony Kay (5-1) | #182 |
| Fri, May 15th | vs PHI | Aaron Nola (3-4) | #39 | @ STL | Dustin May (3-6) | #85 |
| Sat, May 16th | vs PHI | Cristopher Sanchez (6-2) | #3 | @ STL | Kyle Leahy (5-3) | #162 |
| Sun, May 17th | vs PHI | Zack Wheeler (4-1) | #7 | @ STL | Andre Pallante (5-4) | #163 |
| Tue, May 19th | @ STL | Matthew Liberatore (2-3) | #114 | vs BOS | Ranger Suarez (2-3) | #32 |
| Wed, May 20th | @ STL | Michael McGreevy (3-4) | #86 | vs BOS | Connelly Early (5-2) | #97 |
| Thu, May 21st | @ STL | Dustin May (3-6) | #85 | |||
| Fri, May 22nd | @ TOR | Kevin Gausman (4-3) | #19 | vs SEA | Logan Gilbert (3-4) | #11 |
| Sat, May 23rd | @ TOR | Patrick Corbin (2-1) | #216 | vs SEA | George Kirby (5-4) | #14 |
| Sun, May 24th | @ TOR | Dylan Cease (3-3) | #16 | vs SEA | Bryan Woo (5-3) | #6 |
| Mon, May 25th | vs CHC | Ben Brown (2-2) | #52 | vs NYY | Will Warren (6-1) | #60 |
| Tue, May 26th | vs CHC | Jordan Wicks (0-1) | #234 | vs NYY | Cam Schlittler (7-2) | #36 |
| Wed, May 27th | vs CHC | Jameson Taillon (2-4) | #107 | vs NYY | Gerrit Cole (1-0) | #23 |
| Thu, May 28th | vs CHC | Colin Rea (5-3) | #140 | |||
| Fri, May 29th | vs MIN | Taj Bradley (5-1) | #74 | @ TEX | MacKenzie Gore (4-4) | #50 |
| Sat, May 30th | vs MIN | Bailey Ober (6-3) | #72 | @ TEX | Kumar Rocker (2-5) | #103 |
| Sun, May 31st | vs MIN | Zebby Matthews (1-2) | #82 | @ TEX | Jack Leiter (2-4) | #76 |
| Tue, Jun 2nd | @ HOU | Mike Burrows (3-6) | #121 | @ CIN | Andrew Abbott (4-3) | #99 |
| Wed, Jun 3rd | @ HOU | Spencer Arrighetti (7-1) | #126 | @ CIN | Chris Paddack (0-7) | #324 |
| Thu, Jun 4th | @ HOU | Kai-Wei Teng (3-3) | #181 | @ MIN | Bailey Ober (6-3) | #72 |
| Fri, Jun 5th | @ ATL | Martin Perez (3-3) | #200 | @ MIN | Zebby Matthews (1-2) | #82 |
| Sat, Jun 6th | @ ATL | Spencer Strider (3-0) | #31 | @ MIN | Joe Ryan (3-3) | #15 |
| Sun, Jun 7th | @ ATL | Bryce Elder (4-3) | #113 | @ MIN | Connor Prielipp (1-3) | #124 |
| Tue, Jun 9th | vs LAD | Eric Lauer (2-5) | #264 | vs TEX | Nathan Eovaldi (5-6) | #20 |
| Wed, Jun 10th | vs LAD | vs TEX | ||||
| Thu, Jun 11th | vs LAD | vs TEX | ||||
| Fri, Jun 12th | vs MIA | vs HOU | ||||
| Sat, Jun 13th | vs MIA | vs HOU | ||||
| Sun, Jun 14th | vs MIA | vs HOU | ||||
| Mon, Jun 15th | @ ATH | @ WSH | ||||
| Tue, Jun 16th | @ ATH | @ WSH | ||||
| Wed, Jun 17th | @ ATH | @ WSH | ||||
| Fri, Jun 19th | @ COL | vs STL | ||||
| Sat, Jun 20th | @ COL | |||||
| Sun, Jun 21st | @ COL | vs STL | ||||
| Tue, Jun 23rd | vs SEA | @ TB | ||||
| Wed, Jun 24th | vs SEA | @ TB | ||||
| Thu, Jun 25th | vs SEA | @ TB | ||||
| Fri, Jun 26th | vs CIN | @ CWS | ||||
| Sat, Jun 27th | vs CIN | @ CWS | ||||
| Sun, Jun 28th | vs CIN | @ CWS | ||||
| Mon, Jun 29th | @ PHI | |||||
| Tue, Jun 30th | @ PHI | vs TB | ||||
| Wed, Jul 1st | @ PHI | vs TB | ||||
| Thu, Jul 2nd | @ PHI | vs TB | ||||
| Fri, Jul 3rd | @ WSH | |||||
| Sat, Jul 4th | @ WSH | vs PHI | ||||
| Sun, Jul 5th | @ WSH | vs PHI | ||||
| Tue, Jul 7th | vs ATL | @ NYM | ||||
| Wed, Jul 8th | vs ATL | @ NYM | ||||
| Thu, Jul 9th | vs ATL | @ NYM | ||||
| Fri, Jul 10th | vs MIL | @ BAL | ||||
| Sat, Jul 11th | vs MIL | @ BAL | ||||
| Sun, Jul 12th | vs MIL | @ BAL | ||||
| Fri, Jul 17th | @ CLE | vs SD | ||||
| Sat, Jul 18th | @ CLE | vs SD | ||||
| Sun, Jul 19th | @ CLE | vs SD | ||||
| Mon, Jul 20th | @ NYY | vs SF | ||||
| Tue, Jul 21st | @ NYY | vs SF | ||||
| Wed, Jul 22nd | @ NYY | vs SF | ||||
| Fri, Jul 24th | vs CHC | @ DET | ||||
| Sat, Jul 25th | vs CHC | @ DET | ||||
| Sun, Jul 26th | vs CHC | @ DET | ||||
| Mon, Jul 27th | vs ARI | |||||
| Tue, Jul 28th | vs ARI | @ MIN | ||||
| Wed, Jul 29th | vs ARI | @ MIN | ||||
| Thu, Jul 30th | @ CIN | @ MIN | ||||
| Fri, Jul 31st | @ CIN | @ COL | ||||
| Sat, Aug 1st | @ CIN | @ COL | ||||
| Sun, Aug 2nd | @ CIN | @ COL | ||||
| Mon, Aug 3rd | @ MIL | |||||
| Tue, Aug 4th | @ MIL | vs MIN | ||||
| Wed, Aug 5th | @ MIL | vs MIN | ||||
| Thu, Aug 6th | @ MIL | vs MIN | ||||
| Fri, Aug 7th | vs NYM | vs CHC | ||||
| Sat, Aug 8th | vs NYM | vs CHC | ||||
| Sun, Aug 9th | vs NYM | vs CHC | ||||
| Tue, Aug 11th | @ MIA | @ LAD | ||||
| Wed, Aug 12th | @ MIA | @ LAD | ||||
| Thu, Aug 13th | @ MIA | |||||
| Fri, Aug 14th | vs BOS | @ LAA | ||||
| Sat, Aug 15th | vs BOS | @ LAA | ||||
| Sun, Aug 16th | vs BOS | @ LAA | ||||
| Mon, Aug 17th | vs DET | vs ATH | ||||
| Tue, Aug 18th | vs DET | vs ATH | ||||
| Wed, Aug 19th | vs DET | vs ATH | ||||
| Fri, Aug 21st | @ LAD | vs DET | ||||
| Sat, Aug 22nd | @ LAD | vs DET | ||||
| Sun, Aug 23rd | @ LAD | vs DET | ||||
| Mon, Aug 24th | @ SD | |||||
| Tue, Aug 25th | @ SD | @ TOR | ||||
| Wed, Aug 26th | @ SD | @ TOR | ||||
| Fri, Aug 28th | @ STL | @ CLE | ||||
| Sat, Aug 29th | @ STL | @ CLE | ||||
| Sun, Aug 30th | @ STL | @ CLE | ||||
| Tue, Sep 1st | vs SF | vs MIA | ||||
| Wed, Sep 2nd | vs SF | vs MIA | ||||
| Thu, Sep 3rd | vs SF | vs MIA | ||||
| Fri, Sep 4th | vs LAA | vs TOR | ||||
| Sat, Sep 5th | vs LAA | vs TOR | ||||
| Sun, Sep 6th | vs LAA | vs TOR | ||||
| Tue, Sep 8th | @ CWS | vs ARI | ||||
| Wed, Sep 9th | @ CWS | vs ARI | ||||
| Thu, Sep 10th | @ CWS | |||||
| Fri, Sep 11th | @ CHC | @ BOS | ||||
| Sat, Sep 12th | @ CHC | @ BOS | ||||
| Sun, Sep 13th | @ CHC | @ BOS | ||||
| Tue, Sep 15th | vs MIL | @ HOU | ||||
| Wed, Sep 16th | vs MIL | @ HOU | ||||
| Thu, Sep 17th | vs MIL | @ HOU | ||||
| Fri, Sep 18th | vs KC | @ PIT | ||||
| Sat, Sep 19th | vs KC | @ PIT | ||||
| Sun, Sep 20th | vs KC | @ PIT | ||||
| Tue, Sep 22nd | vs STL | vs CWS | ||||
| Wed, Sep 23rd | vs STL | vs CWS | ||||
| Thu, Sep 24th | vs STL | vs CWS | ||||
| Fri, Sep 25th | @ DET | vs CLE | ||||
| Sat, Sep 26th | @ DET | vs CLE | ||||
| Sun, Sep 27th | @ DET | vs CLE | ||||
| Fri, Mar 27th | @ ATL | Chris Sale (8-3) | #5 | |||
| Thu, Apr 2nd | vs MIN | Taj Bradley (5-1) | #74 | |||
| Thu, Apr 9th | vs CWS | Anthony Kay (5-1) | #182 | |||
| Mon, Apr 20th | vs BAL | Kyle Bradish (2-6) | #43 | |||
| Mon, May 4th | vs CLE | Tanner Bibee (0-7) | #38 | |||
| Mon, May 18th | vs BOS | Sonny Gray (6-1) | #30 | |||
| Mon, Jun 1st | @ CIN | Chase Burns (7-1) | #25 | |||
| Thu, Jun 18th | vs STL | |||||
| Mon, Jun 22nd | @ TB | |||||
| Mon, Jul 6th | vs PHI | |||||
| Thu, Jul 23rd | @ DET | |||||
| Mon, Aug 10th | @ LAD | |||||
| Thu, Aug 20th | vs ATH | |||||
| Thu, Aug 27th | @ TOR | |||||
| Mon, Sep 7th | vs ARI | |||||
