Welcome back to Diamond Diplomas, a weekly rundown of all the players knocking on the door to the major leagues. Whether you compete in the deepest of dynasty leagues, or simply want to win the office redraft title, Prospects Live has you covered. For an overview of the tier system used to prioritize players in this series, take a look at the first article in the series here:

As we approach the midway point of the MLB season, let us look back at the most notable performers from the past week, in the latest Report Card (all statistics courtesy of Baseball Reference, Baseball Savant, TJStats, Fangraphs and MiLB.com, updated as of the conclusion of play on June 15).

Report Card

Called Up:

  • Jacob Misiorowski, P (MIL): A tweaked ankle and some mild leg cramps were the only blemishes on an otherwise excellent debut outing for the flame-throwing Misiorowski. He touched 102 mph with his fastball during the five-inning outing and struck out five, allowing zero hits (albeit with four walks). Get the popcorn ready for his upcoming matchup with the Cubs this week.
  • Christian Moore, 2B (LAA): In a move that somehow felt predictable and exciting, the Angels brought Moore up to the bigs on June 13. He has gone hitless in six at-bats since then, but Los Angeles loves to battle-test their prospects in the majors, so they will likely let him learn on the job for the foreseeable future.
  • Brady House, 3B (WAS): Amidst the deluge of news and takes surrounding the Rafael Devers trade, the Nationals quietly called up House for what will be his major league debut. He possesses real power and real swing-and-miss, so expect a learning curve as he acclimates to MLB pitching.
  • Daylen Lile, OF (WAS): Lile returns to Washington after being optioned back on June 10. His glove is ready, but his bat must take a step forward in his second stay with the big league club if he wants to stick around.
  • Brooks Baldwin, UTIL (CWS): The switch-hitting utility man forced his way back onto the White Sox this week after pushing his MiLB batting average up to .380 on the season. He has just three hitless at-bats to show for it so far, though, and looks set to be a bench bat for them moving forward.
  • Andre Granillo, P (STL): My Sleeper Pick arm from the June 3 article in this series, Granillo looked excellent in his debut appearance on Thursday. He provided two and 2/3 innings of shutout relief against Milwaukee, allowing two hits but no walks.

Locked In:

  • C.J. Kayfus, 1B (CLE): Perhaps the most underrated prospect in baseball currently, Kayfus just continues to mash at every minor league stop. His career MiLB batting average of .303 pales in comparison to his .333 mark in 2025, and his past week illustrates just how productive the first-baseman has been at the plate lately: six extra-base hits, two of them home runs, with six runs batted in. Look for him to reach the bigs before the summer winds down. 
  • Owen Caissie, OF (CHC): Though somewhat overshadowed of late by his Triple-A colleagues Moises Ballesteros and Jonathon Long, Caissie had himself quite the series this week. Three home runs, eight runs batted in, and a steal propel the 22-year-old Canadian into tier two on the Diamond Diplomas list.
  • James Outman, OF (LAD): Currently the odd man out given the Dodgers extensive hitting depth, the aptly named Outman nevertheless has hit well following his mid-May demotion. Two home runs this past week take him to 14 on the season in the minors, with nine steals to boot. He could be a deadline trade candidate if the Dodgers decide to work the phones.
  • Brennen Davis, OF (NYY): Fresh off of his Sleeper Pick writeup last week, Davis had another nuclear series for Triple-A Scranton/Wilkes-Barre. The resurgent outfielder hit three home runs and drove in seven runs, in addition to stealing his first base of the month. Giancarlo Stanton’s return to New York will likely delay a potential big league call-up for Davis, but he is doing all he can to show that he deserves one.
  • Michael McGreevy, P (STL): After getting optioned following his spot start against the Dodgers on June 8, McGreevy looked sharp in his return to Triple-A. He threw six shutout innings, allowing three hits, walking none, and striking out six. He remains the primary starter-in-waiting for the Cardinals organization.
  • Joe Boyle, P (TB): Boyle's breakout summer continues! Following his one-run start for Triple-A Durham on Friday, in which he struck out nine batters across five innings of work, the 25-year-old now leads all qualified International League starters in ERA (1.53) and WHIP (0.93). He deserves another big league look soon.
  • Jack Perkins, P (ATH): Last week’s Sleeper Pick, Perkins jumped up a tier on this week’s Diamond Diplomas sheet with his latest outstanding outing. The right-hander tallied twelve strikeouts over six and 1/3 innings, giving up just one earned run.
  • Tyler Uberstine, P (BOS): Uberstine will come up again later in this article, but suffice it to say he deserves dynasty managers’ attention after his latest trip to the mound. On Saturday, the former Northwestern righty threw six shutout innings of walk-free baseball, punching out seven.

Dropped Off:

  • Orelvis Martinez, 2B (TOR): Martinez kicked off June with a hot week but has simmered down considerably since, with just one hit in his last 29 at-bats, dating back to June 6. A call-up will likely have to wait until he shows more consistency.

Alright, moving on to this week’s Diamond Diplomas hitters: