Solana sports betting
Solana sports betting on OVERDOG starts with a deposit of SOL on Solana mainnet, the one network this coin arrives over. What lands is not SOL: the deposit converts into Polymarket's US-dollar stable unit, a balance pegged to the dollar, and that is what buys shares in sports markets priced by other traders instead of by a bookmaker. Money leaves as USDC on Polygon, USDC on Solana, or USDT on Tron.
Read that round trip twice, because Solana sits on both ends of it and the asset does not. Solana is where SOL comes in, and Solana is one of the three chains money goes back out to — but what comes back is USDC. Same chain, different token. There is no SOL withdrawal route anywhere.
OVERDOG is an access layer to the Polymarket exchange, not a bookmaker — it sets no lines and takes no side of your bet. Betting is entertainment, not income; stake only what you can afford to lose.
Funding a bet with SOL on Solana mainnet
One network in, one conversion, one dollar-denominated balance to trade with. Deposits reach us over four address families — EVM, Solana, Tron and Bitcoin — and SOL belongs to the Solana one alone, so its address looks nothing like an EVM deposit address and the two cannot be swapped.
SOL on Solana — the only deposit pair
OVERDOG offers one deposit pair for this asset: SOL on Solana, pinned to the exact token it means. The bridge does list wrapped-SOL on some EVM chains; we do not render those routes, so Solana mainnet is the only way SOL reaches a balance here. SOL is Solana's own native coin, the asset the network charges its fees in, so the send costs a little of what you are sending.
A base58 address, not an 0x one
A Solana address is a base58 string derived from an ed25519 public key, not the hex an EVM chain uses. OVERDOG holds one deposit address per family and each accepts only what belongs to it, so a send into the wrong family is not a support ticket; it is gone. Match the ticker and network on screen to the wallet you are sending from.
Depositing USDC on Solana instead
Solana carries a second accepted deposit asset, worth knowing before you part with the coin. Circle issues native USDC on Solana as an SPL token, and that mint is a pinned deposit route in its own right, over the same Solana address. Depositing SOL spends your SOL; depositing USDC on Solana leaves the SOL where it is. Both land in the same balance.
Buying and selling shares with a funded balance
From here the funding asset stops mattering. Your deposit converts to Polymarket's US-dollar stable unit on Polygon, and that unit — not SOL — is what every market is priced, traded and settled in.
Buying shares at the order-book price
Pick a market and buy shares in the outcome you want. Each share redeems for $1 if that outcome happens and nothing if it does not, so the price reads directly as the market's implied probability. You buy from another trader at a price the order book sets, and the depth resting in that book is what bounds a large ticket.
Exiting a position while the book still has a bid
Holding to settlement is optional. While a market is still trading you can sell your shares back into it at whatever other traders are bidding — the exchange equivalent of a cash-out, and the reason a bet here behaves like a position rather than a receipt. A sale eats into the resting bids, so a thin market is where an exit is worst.
What a bet costs, and what the chain costs
A bet costs a flat 1% OVERDOG fee plus Polymarket's own fees, shown together before you commit. There is no bookmaker's cut folded into the quote, because the quote comes from an order book rather than a book's line. The Solana network fee on your deposit is separate and goes to the chain.
Withdrawing to Solana as USDC
This is where betting with SOL differs from betting with anything else on the slate. Solana is on both legs of the trip — it is where the coin arrives and it is one of the three places money leaves to. The asset is what changes.
Polygon, Solana and Tron — the three destinations
Three places and no others: USDC on Polygon, USDC on Solana, or USDT on Tron. The set is fixed on the server rather than chosen per request — a withdrawal names one of the three by its id and never names a chain or token of its own, which is why no fourth route can be talked into existing. There is no SOL among them. Each carries its own minimum and network cost, shown before you confirm; that cost goes to the chain, and OVERDOG takes nothing.
Same chain, different asset
Choosing Solana returns your money to the chain you funded from, as USDC — the SPL dollar token Circle issues there — credited to a token account under your Solana wallet address. It is not SOL, and nothing on the way out converts it back. If you want to hold SOL again afterwards, that is a purchase you make yourself.
Keeping enough SOL to move what you withdraw
Solana charges its transaction fees in SOL, and a token like USDC lives in its own token account under your wallet address rather than in the address itself. So a Solana wallet holding only USDC cannot send it anywhere: it needs some SOL to pay for the transaction. If you deposit the whole of a SOL balance, leave enough behind to move what comes back.
Checking a Solana address before you send
There is no safety net here, and that is the chain's doing rather than a gap in the product. Tron addresses carry a base58check checksum; a Solana address is a raw ed25519 public key and carries none at all, so anything of the right length in the right alphabet decodes cleanly whether or not it belongs to you. The screen checks shape, never ownership — a typo that stays inside the alphabet will very likely be sent, and that money is gone. Paste the address, never retype it; base58 is case-significant, so even a lower-cased copy is a different address.
Paying tax on a Solana-funded bet
Not tax advice — treatment varies by jurisdiction and changes, and a qualified professional is the right source for your situation. But the order matters, because the first taxable moment lands before you have placed a bet.
The deposit conversion is a disposal
Converting SOL into the dollar unit at deposit is a disposal of that SOL. The IRS treats virtual currency as property, and exchanging it for other property means recognising a capital gain or loss against your basis — Notice 2014-21, answer six, says so. Because there is no SOL withdrawal route, you never receive SOL back here, so there is no later sale to account for.
Winnings, then the basis of what you withdraw
Winnings are ordinary income at their dollar value when you receive them. The USDC or USDT you withdraw is a separate holding carrying its own basis from the moment it lands. Betting without an identity check removes no tax obligation.
What you can bet with a Solana-funded balance
Funding in SOL restricts nothing. The balance is dollar-denominated by the time any order is placed, so a Solana depositor sees exactly the board everyone else sees — there is no SOL-only market and no SOL-only lock-out.
Soccer, the North American majors and UFC
The Americas carry the deepest soccer books here — MLS, Liga MX and Brazil's Serie A — alongside the Premier League and the Champions League, with Club América, Flamengo and Liverpool among the clubs priced. Baseball spans MLB and the Korean and Japanese leagues, basketball the NBA and WNBA, gridiron the NFL and CFL. UFC cards price fight by fight, and the esports board runs Counter-Strike, League of Legends and Dota 2.
Champions, tournament winners and award markets
The futures side prices the Premier League title and the Champions League, the Super Bowl, the NBA championship and the World Series, alongside season awards such as MVP. A futures position on an exchange is a live holding, not a slip in a drawer: the shares keep trading, so a season-winner bet can be taken off whenever there is a bid.
Betting sports on Polymarket with Solana
OVERDOG is an access layer to the Polymarket exchange, never a bookmaker. Prices come from traders bidding against each other, so there is no bookmaker's cut folded into the quote. That is what no vig means — it describes how a price is formed, never a claim that a bet will win.
There is no KYC to deposit SOL, bet or withdraw, the wallet is yours to export at any time, and with no house on the other side, betting well never gets an account limited.
Funding on Solana, settling on Polygon
Polymarket trades and settles on Polygon, so a Solana-funded bet crosses chains before it is ever placed. That is why your balance is held in a Polygon token rather than anything Solana-native, and why Polygon is one of the three places you can take money back out to.
Which block explorer shows your transaction
Your money touches two chains, so its record does too. Each withdrawal destination carries its own explorer and the receipt links the right one: Solscan for Solana, Polygonscan for Polygon, Tronscan for Tron. The bet is on none of them first — shares are bought, sold and redeemed on Polygon, so a Solana explorer shows your deposit leaving and your withdrawal arriving and nothing in between.