Draft round reality check: 43% of first-round hitters in Single-A reached the majors within 3 years. Round 11+? 4.5%.
“43% of first-round Single-A hitters debuted within three years, but only 15% got to 300 MLB plate appearances in that time.”
See who’s heating up
before the hobby does.
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.
Free during the beta. Already have an account? Open Nine Signal with the email address you signed up with.
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Lead
Gabriel Gonzalez
Roster assignment changed: Triple-A → Major League Baseball.
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Moving
Samuel Zavala
Walk rate is up 6.3 points over the last 30 days.
+6.3 ptsBB%−6.3 ptsK%
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Moving
Ronny Hernandez
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.
Free to read, no account needed.
What we flagged first
31 players flagged by Morning Signal between 25 Aug and 25 Sep 2026. Three of them, picked to show different kinds of flag:
- Miguel Sime Jr. flagged 24 Sep 2026 · Command, Miss Bats
- Josue De Paula flagged 30 Aug 2026 · Power
- Promoted 12 Sep 2026
- Moved down 24 Sep 2026
- Samuel Zavala flagged 29 Aug 2026 · Approach, Bat-to-Ball
What members get this fall.
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.
- Morning Signal
- The research desk’s edition, on mornings when something clears the bar. This fall it leads with the Fall League.
- Probable Starters
- Each Fall League game day around 7 AM Central: every probable starting pitcher, ranked ones marked, updated until first pitch.
- Lineups
- A card for each game with a ranked prospect in the confirmed starting lineup.
- Dinger Tracker
- A line for every Fall League home run during the game, then a nightly wrap with a spray chart.
- Top Performers
- Last night’s top five hitters and pitchers, around 7 AM Central. On Sundays, the Fall League leaders.
- Member rooms
- Game Night for tonight’s games, plus rooms for players, prospects and product feedback.
- In the app
- Follow a Fall League prospect and his games come to your live board, with push alerts. His Fall League lines stay apart from his regular-season numbers.
- The Sunday email
- A free weekly roundup of Morning Signal and the flags, on weeks with something to send.
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
How it works.
Every screenshot below is from our recording of the regular season in August 2026: what members get in season, not today’s games.
Prospect Digest
The research desk
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
The morning board
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.
Following a player
Follow a player and his games join one live board. Alerts are push notifications, and you choose how much you hear, player by player:
- Key Moments — the default: only the moments worth an interruption.
- Follow Closely — every plate appearance or completed inning.
- Custom — pick the event types yourself.
- Muted — still on your board, never in your pocket.
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.
One page per player
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.
A real example: Demetrio Crisantes
What surfaced
On 23 September, Morning Signal flagged his walk rate.
Why it deserved another look
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% |
What to watch next
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.
Want this for your players? Get free access
Built to be checked.
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]
- Who gets researched. The research desk covers several hundred players in depth, chosen on age-for-level, performance at that level, and recent signals, and every player shows the reason he qualified.
- Where the numbers come from. Official MLB Stats API data, plus pitch and batted-ball tracking Nine Signal computes itself, including complex-league levels most coverage never reaches.
- What a missing number looks like. A metric the leagues didn’t track is published as missing, never as a fake zero. The Prospect Index ranks on this season’s actual performance, real plate appearances at real levels, with no scout grades and no invented scores.
Common questions.
What is Nine Signal?
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.
What stays free?
Some things stay free for good: the research studies, What we flagged first and the Sunday email. Everything else in Nine Signal is free during the beta.
Which players and levels are covered?
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.
Is Nine Signal free, and how do I get in?
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.
Is Nine Signal affiliated with MLB or MiLB?
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.
What happens to my email?
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.
Get free access.
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.