Nine Signal watches every minor-league level, down to the complex leagues, and tells you when a prospect’s numbers actually change. It’s built for people who collect Bowman prospects, and dynasty players use it too. You get the numbers and what changed. What you do with them is up to you.
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Roster assignment changed: Triple-A → Major League Baseball.
Walk rate is up 6.3 points over the last 30 days.
+6.3 ptsBB%−6.3 ptsK%
Isolated power is down .104 over the last 30 days.
−.104ISO−4.0 ptsBB%
From Prospect Digest · Data through 2026-08-31
A real edition, delivered on Monday 31 August 2026. Each edition carries a lead, up to three further strong developments and, on some mornings, one worth watching. Never padded: when nothing strong enough clears the bar, there is no edition at all.
Every example on this page carries its date. In the fall, Nine Signal follows the prospects playing in the Arizona Fall League, and the research desk publishes only when something clears the bar.
“The one that came out best is simple: hitters in the youngest fifth for their level (age on July 1 compared to everyone else at that level that year) who were also in the top fifth for ISO.”
31 players flagged by Morning Signal between 25 Aug and 25 Sep 2026. Three of them, picked to show different kinds of flag:
Winter ball too: winter league stats leaders, every player ranked, updated each morning.
Free access includes the app and the members’ Discord. “Ranked” below means in the top 300 of the Nine Signal Prospect Index, our own ranking built from this season’s numbers.
In season, every morning: the morning board of who is running hot and cold, what changed overnight for the players you follow, and the player pages and the Prospect Index rebuilt from the previous day’s games.
Free during the beta. Get free access
The morning board is a recording of the regular season in August 2026; the live board, Fall League games on 28 October 2026: not today’s games.
Prospect Digest is the research desk inside Nine Signal. It writes Morning Signal, the morning board and the research on each player’s page. Read the research
In season, the desk sorts the previous day’s games into a board. The Action Zone is its top. Top Conviction is the strongest hot runs, each against the player’s own season rate. Concerns are the cold ones: a cold arm is a pitcher, a cold streak a hitter. Status Changes holds promotions and moves down.
Follow a player and his games join one live board. Alerts are push notifications, and you choose how much you hear, player by player:
Two one-night overrides, Follow Closely Tonight and Mute Tonight, cover a single game and expire on their own. Signals stay on the board; they never buzz your phone. Nine Signal is a web app you add to your home screen on iPhone or Android.
His live state and next game sit at the top. Underneath is his dossier, the desk’s research on him: his numbers against players at his level and his place on the Nine Signal Prospect Index. A player the desk hasn’t covered can still be followed, and his page says so.
On 23 September, Morning Signal flagged his walk rate.
At 22, at the top level of the minors, he was walking once every seven plate appearances, against about once every twelve across all his Triple-A games, a total that includes this stretch.
| Triple-A window | BB | PA | BB% |
|---|---|---|---|
| Last 30 daysAug 25 – Sep 20 | 13 | 91 | 14.3% |
| All Triple-AJul 21 – Sep 20, incl. the last 30 days | 18 | 209 | 8.6% |
Whether it holds. Ninety-one plate appearances is small and walk rates swing: a reason to look again, not proof his approach changed. His next games were in the Arizona Fall League, which began on 3 October.
About these numbers. The comparison is the one the research used: his Triple-A total, which includes those same 91 plate appearances. Based on the 23 September research, not a copy of the edition; its hard-hit figure is left out because the tracking data behind it was later found incomplete. The Fall League is separate roster context, from Nine Signal’s roster capture of 15 September.
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Nine Signal measures what has happened on the field, from public data, by stated rules. It is not a scouting service and it does not promise outcomes. Questions about the method or the data? [email protected]
One place to follow minor-league baseball prospects: research and player dossiers from Prospect Digest before first pitch, plus a live board and configurable push alerts once the games start.
Some things stay free for good: the research studies, What I flagged first and the Sunday email. Everything else in Nine Signal is free during the beta.
You can search, follow and set alerts for every affiliated minor-league player, Triple-A down to the complex leagues. The research desk covers several hundred of them in more depth, and every one shows why he qualified.
Yes, it’s free during the beta. Leave your email at the bottom of this page and you’re in. Your setup email usually arrives within a few minutes. If paid plans ever come, members will hear about it first, well before anything changes.
No. Nine Signal is not affiliated with or endorsed by Major League Baseball or Minor League Baseball. Baseball data is sourced from publicly available MLB systems.
It becomes the email on your Nine Signal account. If you tick the box, it also gets the free Sunday email, and every one of those has a one-click unsubscribe. We never share or sell your address. The privacy page has the details.
Free during the beta. Sign up with your email and your setup link arrives within a few minutes. Built for prospect collectors, and dynasty players use it too.
Already have an account? Open Nine Signal with the email address you signed up with.
