Best Price Right Now
Best moneyline: Learner Tien -172 at Pinnacle (runner-up -175 at 888sport); Karen Khachanov +160 at BetOnline.ag (runner-up +160 at LowVig.ag).
Compared across 20 sportsbooks. Spread and total best prices are in the board below — the best book often differs by market and by side.
Line Movement
Since Sep 6, 6 AM ET, the moneyline has moved toward Learner Tien (Karen Khachanov price improved from +150 to +160); the total dropped from 39.5 to 38.75.
| Market | Tracking opened (Sep 6, 6 AM ET) | Now |
|---|---|---|
| Moneyline (best available) | Learner Tien -170 / Karen Khachanov +150 | Learner Tien -172 / Karen Khachanov +160 |
| Spread (Karen Khachanov, consensus) | +3.5 | +3.5 (range +3 to +3.5) |
| Total (consensus) | 39.5 | 38.75 |
Full Odds Board
| Sportsbook | Learner Tien | Karen Khachanov | Spread (Karen Khachanov) | Total | O / U |
|---|---|---|---|---|---|
| ReBet | -188 | +146 | +3.5 (-118) | 38.5 | -122 / -108 |
| Bovada | -185 | +155 | +3 (-110) | 39 | -110 / -120 |
| Fanatics | -180 | +150 | — | — | — |
| theScore Bet | -185 | +145 | — | — | — |
| MyBookie.ag | -184 | +149 | +3.5 (-121) | 38.5 | -125 / -111 |
| DraftKings | -191 | +155 | — | — | — |
| Pinnacle | -172 | +155 | +3 (-104) | 39 | -102 / -110 |
| BetRivers | -180 | +145 | +3.5 (-125) | 39.5 | -113 / -118 |
| betPARX | -180 | +145 | +2.5 (+100) | 39.5 | -113 / -118 |
| Bally Bet | -180 | +145 | +2.5 (+100) | 39.5 | -113 / -118 |
| FanDuel | -182 | +150 | — | — | — |
| 888sport | -175 | +138 | — | — | — |
| Hard Rock Bet | -180 | +145 | — | — | — |
| Fliff | -190 | +140 | — | — | — |
| BetMGM | -190 | +145 | — | — | — |
| Caesars | -200 | +150 | +3.5 (-125) | 38.5 | -115 / -125 |
| BetOnline.ag | -180 | +160 | +3.5 (-125) | 38.5 | -110 / -107 |
| LowVig.ag | -180 | +160 | +3.5 (-125) | 38.5 | -110 / -107 |
| BetAnything | -185 | +155 | +3.5 (-120) | 38.5 | -110 / -120 |
| BetUS | -185 | +155 | +3 (-115) | 39 | -115 / -115 |
Pricing Context: ATP US Open Vig
Lowest-vig sportsbooks for ATP US Open right now: Pinnacle (A, 2.96% avg vig), BetOnline.ag (B, 4.06% avg vig), LowVig.ag (B, 4.06% avg vig). Lower vig means the book keeps less of every dollar wagered — the best single-game price and the best long-run pricing are not always the same book. Pinnacle, which holds a best price on this game, grades A on ATP US Open vig overall.
Frequently Asked Questions
Which sportsbook has the best odds for Learner Tien vs Karen Khachanov?
Best available moneyline right now: Learner Tien -172 at Pinnacle (runner-up -175 at 888sport); Karen Khachanov +160 at BetOnline.ag (runner-up +160 at LowVig.ag). Prices refresh hourly — the full board below shows every tracked sportsbook.
Has the line moved for Learner Tien vs Karen Khachanov?
Since Sep 6, 6 AM ET, the moneyline has moved toward Learner Tien (Karen Khachanov price improved from +150 to +160); the total dropped from 39.5 to 38.75.
How current are these odds?
Odds are refreshed hourly from live sportsbook data (last update: September 7, 2026 at 2:00 PM UTC). Odds change quickly around game time — always verify the price at the book before betting.
How We Calculate These Numbers
- Data Source
- All odds on this page come from The Odds API, which aggregates real-time lines from licensed US and offshore sportsbooks. We track moneyline, spread, and totals markets across every sport with active betting lines.
- Update Frequency
- We pull a fresh snapshot of every tracked market three times per day — at 6:00 AM, 2:00 PM, and 10:00 PM UTC. Each snapshot captures the latest lines from every sportsbook that has posted odds for a given event. The timestamp at the top of each page tells you exactly when the data was last refreshed.
- Vig Calculation
- Vig (short for vigorish, also called juice or overround) measures the margin a sportsbook builds into its odds. We calculate it by converting the odds on each side of a market to implied probabilities, summing those probabilities, and subtracting 100%. For example, a market priced at -110/-110 implies 52.38% on each side — a total of 104.76%, meaning a vig of 4.76%. Lower vig means better value for bettors because you keep more of your winnings.
- Per-Market Breakdown
- We compute vig separately for each market type: moneyline (h2h), point spreads, and totals (over/under). The "average vig" shown for each sportsbook is the mean across all market types weighted by the number of events sampled in each market.
- Grading Scale
- Every sportsbook receives a letter grade based on its average vig: A+ (under 2%) is exchange-level pricing. A (2–3%) is very competitive. B+ (3–4%) is above average. B (4–5%) is the industry standard — a -110/-110 line is 4.76%. C+ (5–6%) is slightly below average. C (6–7%) is below average. D (7–8%) is high vig. D− (8–10%) is very high vig. F (10%+) is predatory pricing. See the full Vig Index Methodology for formulas, worked examples, and known limitations.
- Trend Tracking
- We store daily snapshots for 30 days, allowing us to show 24-hour and 7-day vig trends. A downward trend (improving) means sportsbooks are tightening their lines — often in response to increased competition or higher betting volume as a season heats up.