With Hiura back in MLB and taking over the Misc News thread, I thought now might be as good a time as any to see how Keston's success in AAA over the last few years might translate (or not) to the MLB level.
Methodology is pretty straight forward. I took the 466 AAA batters with at least 500 PAs since 2021 on the FanGraphs leaderboard, sorted them by wRC+, and then clicked over to see what their MLB results were over the same 2021-24 time period. Turns out Keston is one of 34 hitters with at least a 130 wRC+ in AAA over that stretch...
Jake Cave
AAA (684 PAs) 149 wRC+
MLB (732 PAs) 66 wRC+
Brent Rooker
AAA (632 PAs) 149 wRC+
MLB (1,092 PAs) 124 wRC+
Henry Ramos
AAA (621 PAs) 147 wRC+
MLB (141 PAs) 70 wRC+
Matt Davidson
AAA (738 PAs) 146 wRC+
MLB (37 PAs) 54 wRC+
Abraham Almonte
AAA (602 PAs) 145 wRC+
MLB (228 PAs) 88 wRC+
Jonathan Aranda
AAA (1,015 PAs) 144 wRC+
MLB (242 PAs) 87 wRC+
Josh Lowe
AAA (876 PAs) 143 wRC+
MLB (845 PAs) 114 wRC+
Luke Raley
AAA (586 PAs) 142 wRC+
MLB (795 PAs) 112 wRC+
Franchy Cordero
AAA (821 PAs) 140 wRC+
MLB (482 PAs) 73 wRC+
Jonah Bride
AAA (731 PAs) 139 wRC+
MLB (312 PAs) 58 wRC+
Spencer Horwitz
AAA (945 PAs) 138 wRC+
MLB (142 PAs) 149 wRC+
Coby Mayo
AAA (536 PAs) 138 wRC+
MLB (yet to debut)
Elehuris Montero
AAA (596 PAs) 136 wRC+
MLB (739 PAs) 67 wRC+
Vaughn Grissom
AAA (504 PAs) 135 wRC+
MLB (323 PAs) 78 wRC+
Mark Vientos
AAA (872 PAs) 134 wRC+
MLB (448 PAs) 102 wRC+
Jake McCarthy
AAA (598 PAs) 134 wRC+
MLB (971 PAs) 103 wRC+
Aderlin Rodriguez
AAA (682 PAs) 134 wRC+
MLB (never got called up)
JJ Bleday
AAA (500 PAs) 133 wRC+
MLB (906 PAs) 94 wRC+
Taylor Motter
AAA (888 PAs) 133 wRC+
MLB (117 PAs) 28 wRC+
Keston Hiura
AAA (915 PAs) 133 wRC+
MLB (475 PAs) 89 wRC+
Zach Reks
AAA (519 PAs) 133 wRC+
MLB (44 PAs) 19 wRC+
Cooper Hummel
AAA (1,187 PAs) 132 wRC+
MLB (235 PAs) 53 wRC+
Ben Gamel
AAA (562 PAs) 132 wRC+
MLB (846 PAs) 96 wRC+
Ivan Herrera
AAA (667 PAs) 131 wRC+
MLB (258 PAs) 101 wRC+
Nick Gonzales
AAA (580 PAs) 131 wRC+
MLB (335 PAs) 87 wRC+
Michael Stefanic
AAA (1,373 PAs) 131 wRC+
MLB (175 PAs) 74 wRC+
Heston Kjerstad
AAA (595 PAs) 131 wRC+
MLB (84 PAs) 140 wRC+
Joshua Palacios
AAA (578 PAs) 130 wRC+
MLB (370 PAs) 78 wRC+
Justyn-Henry Malloy
AAA (839 PAs) 130 wRC+
MLB (89 PAs) 91 wRC+
Miguel Vargas
AAA (996 PAs) 130 wRC+
MLB (407 PAs) 89 wRC+
Yonathan Perlaza
AAA (543 PAs) 130 wRC+
MLB (currently in KBO)
Eddy Alvarez
AAA (882 PAs) 130 wRC+
MLB (142 PAs) 45 wRC+
Miguel Andujar
AAA (844 PAs) 130 wRC+
MLB (552 PAs) 89 wRC+
Jordan Westburg
AAA (714 PAs) 130 wRC+
MLB (573 PAs) 120 wRC+
So of the 34 I am counting three legit Orioles prospects, five around average-ish bats (Herrera, Gamel, Bleday, McCarthy, Vientos), two above average bats (Lowe, Raley), one good bat (Rooker) and one star level bat (Horwitz).
That leaves 22 of the 34 very best AAA hitters over the last four years who haven't been able to clear even a lowly 94 wRC+ when called up to MLB.