The AI that trades Tennis for you.
Real PnL cards from Rainmaker users at the Cincinnati Open. Flip through the deck to see the tournament's biggest wins.
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RainmakerSettled on Polymarket.
Real Auto fills, held to settlement. Every trade executes from users’ own Polymarket wallets.
Record and win rate cover every settled signal, wins and losses. Grouped by tournament — tap any card to open the real market on Polymarket.
Settled tennis sides on Polymarket: Backspin (incl. overlays) since Jul 21, 2026 PT, unique signals bought by at least 3 wallets. Record is 44–17 across 61 settled signals (72.1% win rate); each game side is counted once regardless of the number of fills. The +1,801.0% figure is summed trade ROI, not portfolio return. Individual trade ROI is calculated from entry price to settlement, and losses are counted at −100%. The grid is the full log: every settled signal, wins and losses, nothing curated. Cards are ordered by entry time, not settlement time. Open positions are not shown. Past performance is not a guarantee of future results.
How Rainmaker works
Four steps, about 10 minutes. C9 handles the games from there.
1. Create your account
Sign up with an email in about two minutes. No invite, no crypto experience needed.
2. Fund your Polymarket wallet
Add funds with a card or crypto, from $20. Everything lands in your own Polymarket wallet.
LAD @ WSH41 Yes @ 58¢ · now 62¢+$6.42+27%
LAD 4–
2 WSH· Top 7th
NYY @ TOR88 Yes @ 55¢ · now 58¢+$11.20+23%3. Turn on Backspin
Set your stake and flip the switch. C9, Rainmaker's AI agent, trades live tennis matches for you, entries and exits, starting with today's tour.
MIATennis Backspin62¢ → 100¢ · Settled+$23.40+60%
TEXTennis Backspin52¢ → 100¢ · Settled+$34.10+91%
STLTennis Backspin47¢ → 0¢ · Settled−$25.00−100%4. Track & share winnings
Every settled trade lands in your portfolio history. Share your P&L card, withdraw anytime.
This is the app.
Not renders. These are the actual screens: live scores with C9's thinking orb on the games it's in, one tap into any game, and positions settling in your own wallet.
Every game with win odds moving in real time. The orb marks games C9 is working.
Highlights, streaming plays, and the live win-probability chart.
Set your stake per trade and turn on Auto. That is the whole job.
Any position becomes a card you can post in one tap.
$RAIN is the quiet advantage.
Optional. Everything works without it.
You don't need $RAINto trade, and we won't push it. Holders get the perks we don't advertise: lower fees, first in line when one signal fires for thousands of wallets at once, a bigger cut on referrals. Funds stay in your own Polymarket wallet either way.
Frequently Asked Questions
Your first automated trade can settle tonight.
Sign up, add funds from $20 by card or crypto, turn on Auto. About 10 minutes, start to live.
Activate C9