A mock draft is only as useful as how well it matches your real draft. Yahoo cannot simulate your exact league: your keepers, your traded picks, your draft slot, your scoring. This can. Two prompts build a mock draft simulator customized to your league, with AI managers drafting off real rankings and a clock that puts you on the spot.
It works for any format: redraft, keeper, dynasty, PPR, half PPR, standard, superflex. If it is in your league, screenshot it and it goes in.
Everything runs off what you show it. More context in, better draft room out.
I built this in Claude, using the Fable 5 model for the sharpest output. Opus 5 or Opus 4.8 work well too.
The prompts below have brackets for these. Fill them in or the AI guesses wrong. Number of teams. Scoring format (PPR, half PPR, standard, or your league's name for it). Your team name so the AI can find you on the board. Your draft slot in round one, or the exact pick numbers you own if you traded any.
Whoever kept whom, and at which pick. A spreadsheet screenshot works. So does your platform's keeper page. No keepers in your league? Skip this and state your draft order in the prompt.
Any source you trust, including your platform's default. Cover 150 to 200 players. Multiple screenshots are fine.
The line showing starting positions: QB, WR, WR, RB, RB, TE, FLEX, DEF, bench.
The full scoring page. This changes how the AI drafts, because 6-point passing touchdowns move quarterbacks up every board.
Screenshot your platform's Average Draft Position column. Rankings tell you how good a player is, ADP tells you when players actually get drafted. Feeding in both is the smartest move you can make, because the gap between them is where every value pick lives.
Upload your keeper list or draft order, your rankings, your roster settings, and ADP if you grabbed it. Then paste this with the brackets filled in.
I have a [12] team [PPR] fantasy football draft coming up. My team is [YOUR TEAM NAME] and I pick [10th] in the first round. Attached are the keepers from every team, the rankings I'm using, and my roster positions. Build me an interactive HTML draft board: 1. Remove every keeper from the rankings so I only see who is actually available. 2. Work out all of my pick numbers across every round, accounting for the snake order and any traded picks. 3. When you show where I pick, count real selections rather than slot numbers. Keepers come off the board at their own slots, so my overall pick 15 might really be the 14th player taken. I care about my place in the actual order. 4. Mark every one of my picks directly in the rankings, and highlight the range of players who could realistically be there, about 5 spots either side. 5. Let me tap a player to mark them drafted, track my roster filling up, and see what is left by position. 6. Position filters for QB, RB, WR, TE, DEF, plus a FLEX filter that shows RB, WR, and TE together. 7. If I attached ADP, show it on every player card next to their rank, and let me sort the board by either one. 8. Let me star players I want to target, with a filter to show only starred, and remember my stars between sessions. 9. Make it clean on a phone. Tight player cards, nothing wrapping, easy to tap. Draft night happens on my phone.
A working board you open in your browser. Every keeper gone, your picks marked in the rankings, the realistic range around each one highlighted, and your shortlist a tap away.
Upload your league scoring settings. Then paste this.
Now add a mock draft mode to this. Simulate the entire draft. Every other team autodrafts based on the rankings plus what their roster already needs. Keepers fire automatically at their real pick slots. When my pick arrives, stop and let me choose with a 2 minute countdown clock that runs automatically, and auto-pick best available if it expires. Rules that matter: - Keep every AI pick within 4 spots of the best available player. Realistic picks are the whole point, and a player falling 30 spots makes the simulation useless. If I attached ADP, draft by ADP order since that is how the room actually behaves. - Load each team's keepers into their roster from pick one, not when their keeper slot arrives, so I can see roster needs the whole way through. - Remove drafted players from the board as they go so I am never scrolling past names that are gone. - Use my attached scoring settings to shape strategy, since scoring changes when positions come off the board. - Let me sim ahead to my pick, pause, speed it up, and see the last few picks as they happen. - When I'm on the clock, put the best available player right at the top so I never scroll to draft. - Show a full recap of all rosters when the draft ends.
A full draft room. Watch the board come off pick by pick, jump ahead to your turn, then draft against the clock like it is draft night. That is your 0 to 1. Run it ten times before your real draft and you will learn more about your draft position than a month of reading rankings.
Two prompts made a real tool. That same move, applied to your business every week, is what Undeniable Studio is. Live weekly coaching, the playbooks, and the room that keeps you building.
Everything below is optional. Add whatever fits where you are.
Ask for the HTML file and host it anywhere that serves static pages. It lives at a URL instead of a file on your desktop, and you can add it to your phone's home screen for one-tap access at the draft table.
Ask for the rankings data to sit in one clearly marked block at the top of the file. News breaks Thursday, you edit two lines, done.
Ask for a focused mock mode: one compact sticky header, filters tucked behind a button, sidebar panels collapsible. Zero scrolling to draft on your phone.
Screenshots beat typing. Every piece of data came from an image. No spreadsheets, no manual entry. Point your phone at your league and go.
Constrain realism out loud. The stay-within-4-spots rule is what turns a random simulator into a planning tool. Any time output feels unrealistic, name the boundary you want.
Use it, then say what bugs you. Every rule in prompt two came from running the thing and naming the exact friction. Plain language works. "Drafted players should disappear so I stop scrolling" is a complete instruction.
Share the link with your league before the draft and you just handed your opponents your strategy. Show them after you win.
These are the actual prompts I used to build my own mock draft simulator, start to finish. A friend copied them off a screenshot and had his own running the same day. Same words, same order, yours to take.
I have my 12 team PPR fantasy football draft coming up next week. My team is Rob (can only get better). The picks attached are the keepers from the other teams. I also attached the rankings from the Fantasy Footballers podcast (from their ultimate draft kit). I want to create a ranked list of who is available for me to select (in bullet points), removing the keepers that are taken. So in theory, I want to be able to see the pick number I am at, and the range of players who would be available then. So make that "my picks" (by number) separate. I also attached the positions so we can see the format and what I fill. Yes, create the HTML. Impress me. And super functional. And awesome. And in my branding.
What I want to do now is create a mock draft software that I can run. What I want to do is be able to take the fantasy footballers rankings, combined with the list of keepers by each team, and considering who each would take based on the rankings and who they have already, do a mock draft that autodrafts for each team/person, until it comes to me. And then I can choose who I would take. For me there can be a 2 minute countdown clock. For everyone else it picks quick based on rankings/most likely strategically. Ideally this would be a feature within this that we created, because I see there is a "draft to me" button, which is great. Now I'd like to be able to run this like I see on Yahoo Fantasy or Fantasy Footballers. For additional context on strategy, I attached the Yahoo points scored for this league by player. New players got added that are rookies, players came back from injury, so the fantasy footballers rankings are most important/weighted. But this gives additional context for league scoring. I also included the league scoring settings.
Everything past these prompts was me running the tool and saying what I wanted next in plain language. Make the drafted players disappear. Add ADP. Tighten it up on my phone. The prompts up top already fold in what all of that taught me, so you land where I landed without the back and forth.
Yes. Skip the keeper screenshot and state your draft order in the prompt. The board and the mock draft work the same, there are just no keepers to remove.
Screenshot any rankings you trust, including your platform's default. The tool works off whatever you give it. Add your ADP screenshot too, and the mock drafts by how players actually come off the board, which is the most realistic simulation you can get.
No. Both prompts ask the AI to build the file for you. You open it in a browser and use it. If you want it at a web address so you can pull it up on your phone at the draft, that is one more ask.
Yes. Screenshot your roster settings and scoring exactly as your league has them and name the format in the prompt. The AI adjusts to whatever you show it.
Yahoo mocks run a generic league. This one runs your league: your keepers, your traded picks, your draft slot, your scoring, and your rankings. It is a mock draft built to match the exact draft you are about to do.