Backspin+: The world's best AI tennis trader.

Our newest AI sports trading model, Backspin+, autonomously dominates the US Open with a 16 win, 3 loss win rate.

Rainmaker
Scan to open rainmaker.fun
US Open · Days 1-2
Tiafoe vs Damm · Backspin
+$0
56c -> 87c · +55% ROI · 125 wallets
+$949
Rainmaker
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US Open · Days 1-2
Navone vs Djokovic · Backspin
+$949
56c -> 89c · +59% ROI · 125 wallets
+$967
Rainmaker
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US Open · Days 1-2
Rodionov vs Perricard · Backspin
+$967
55c -> 89c · +62% ROI · 119 wallets
+$1,100
Rainmaker
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US Open · Days 1-2
Shapovalov vs Kecmanovic · Backspin
+$1,100
53c -> 89c · +68% ROI · 118 wallets
+500%
Rainmaker
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US Open · Days 1-2
Joint vs Samsonova · Comeback
+$1,564
12c -> 72c · +500% ROI · 47 wallets
+$1,334
Rainmaker
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US Open · Days 1-2
Tsitsipas vs Fils · Backspin
+$1,334
56c -> 99c · +77% ROI · 129 wallets
+$1,186
Rainmaker
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US Open · Days 1-2
Vacherot vs Kovacevic · Backspin
+$1,186
55c -> 91c · +65% ROI · 132 wallets

Swipe to browse real user wins

Let Backspin trade for you

Settled on Polymarket.

Real Auto fills, managed to TP or settlement. Every trade executes from users’ own Polymarket wallets.

Record and win rate cover every closed signal, wins and losses. TP hits count when users can exit at the live threshold.

Tennis
Backspin
69–34
Win rate
67.0%
US Open20 signals
Aug 30 – Aug 31
BackspinZverev vs Sonego
ZZverevW
Entry Sep 1, 10:20 PM · 59c fill+57.7%
BackspinTiafoe vs Damm
TTiafoeW
Entry Aug 31, 7:28 PM · 56c fill+64.1%
BackspinTabilo vs Hanfman
TTabiloW
Entry Aug 31, 1:02 PM · 63c fill+40.4%
BackspinFearnle vs Landalu
FFearnleW
Entry Aug 31, 11:30 AM · 55c fill+45.0%
BackspinSvrcina vs Royer
SSvrcinaW
Entry Aug 31, 11:27 AM · 58c fill+53.1%
BackspinRodiono vs Perrica
RRodionoW
Entry Aug 31, 10:39 AM · 55c fill+62.4%
BackspinTsitsip vs Fils
TTsitsipW
Entry Aug 31, 10:21 AM · 56c fill+76.9%
BackspinArnaldi vs Duckwor
AArnaldiL
Entry Aug 31, 10:15 AM · 59c fill−100%
Cincinnati Open35 signals
Aug 13 – Aug 24
Canadian Open24 signals
Jul 29 – Aug 9
Activate Backspin+The same Backspin signals, from your own wallet. Setup takes about 10 minutes.

Settled tennis sides on Polymarket: Backspin (incl. overlays) since Jul 21, 2026 PT, unique signals bought by at least 3 wallets. Record is 69–34 across 103 settled signals (67.0% win rate); each game side is counted once regardless of the number of fills. The +971.0% 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.

Recent wins · calendar
Last 3 settled
If you puton each →$46+$16 · +54% avg

US Open

Aug 30
Backspin
Zverev vs Sonego
1h ago · 146 wallets · Aug 30
+57.7%+$6
Backspin
Tiafoe vs Damm
1d ago · 135 wallets · Aug 30
+64.1%+$6
Backspin
Tabilo vs Hanfman
1d ago · 135 wallets · Aug 30
+40.4%+$4

How Rainmaker works

Four steps, about 10 minutes. Backspin handles the games from there.

Create account~2 min
Email verifiedNo invite
you@gmail.com
Account created
Open to everyone · $RAIN optional

1. Create your account

Sign up with an email in about two minutes. No invite, no crypto experience needed.

Polymarket wallet
0x8f3…a2C4Deposit wallet
Balance$500.00 USD
Add funds · card or crypto
Your wallet, your funds · withdraw anytime

2. Fund your Polymarket wallet

Add funds with a card or crypto, from $20. Everything lands in your own Polymarket wallet.

DashboardAI active
LAD team logoLAD @ WSH41 Yes @ 58¢ · now 62¢+$6.42+27%
LAD team logoLAD 4–WSH team logo2 WSH· Top 7th
NYY team logoNYY @ TOR88 Yes @ 55¢ · now 58¢+$11.20+23%

3. Turn on Backspin

Set your stake and flip the switch. Backspin+ trades live tennis matches for you — entries and exits, starting with today's tour.

Portfolio7D30DAll Time
$1,842.50
▲ +$284.17 (18%)
MIA team logoMIATennis Backspin62¢ → 100¢ · Settled+$23.40+60%
TEX team logoTEXTennis Backspin52¢ → 100¢ · Settled+$34.10+91%
STL team logoSTLTennis 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.

Activate Backspin+Step one takes about two minutes.

This is the app.

Not renders. These are the actual screens: live scores with Backspin's thinking orb on the games it's in, one tap into any game, and positions settling in your own wallet.

Live scores
Live scores

Every game with win odds moving in real time. The orb marks games Backspin is working.

Tap into any game
Tap into any game

Highlights, streaming plays, and the live win-probability chart.

One switch
One switch

Set your stake per trade and turn on Auto. That is the whole job.

Share the win
Share the win

Any position becomes a card you can post in one tap.

For holders

$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.

Token address · Solana
Chart
01Lower trading fees
02Priority fills when signals get crowded
03Boosted referral payouts
Bought $RAIN?
Join our Discord for setup support.
Join Discord
No $RAIN yet?
You don't need any. Sign up, add funds, turn the AI on.
Activate Backspin+

Frequently Asked Questions

Yes. You're simply authorizing an AI system to place trades on your behalf using Polymarket.

An email and $20. Fund with a card or crypto, turn on Auto, and you're live in about 10 minutes. $RAIN is optional.

Backspin is live on tonight's slate

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 Backspin+