In tennis sports betting, the term “Under 20“ refers to a total games market. Specifically, you’re betting that the total number of games played in a match will be fewer than 20.
How It Works
- A standard tennis match is best of 3 sets (most ATP/WTA events).
- Each set typically goes to 6 games, but can be extended (e.g., 7–5, 7–6).
If you bet “Under 20”, you win if the total number of games is 19 or less.
If it’s 20 or more, you lose.
Example
| Match Score | Total Games | Under 20 Wins? |
|---|---|---|
| 6-2, 6-3 | 17 | Yes |
| 6-4, 6-4 | 20 | No |
| 6-1, 6-0 | 13 | Yes |
| 7-5, 7-6 | 25 | No |
| 6-3, 3-6, 6-2 | 26 | No |
| 6-2, 6-1 | 15 | Yes |
Betting Tips for “Under 20”
- Look for Mismatches
- Strong favorite vs weak opponent.
- Likely to be a quick match (e.g., 6-2, 6-1).
- Surface Matters
- Clay courts: longer rallies → more games → avoid “Under”.
- Grass/hard courts: more aces, shorter points → better for “Under”.
- Player Styles
- Big servers vs weak returners: risk of tie-breaks = more games.
- Look for players who break serve easily.
- Check Form & Head-to-Head
- Has the favorite dominated this opponent in past matches?
- Look at past results — short matches suggest good value.
- Weather Conditions (for outdoor matches)
- Windy or rainy conditions may affect performance → shorter games possible.
Be Cautious If…
- Players are evenly matched.
- Previous head-to-heads were tight battles.
- One or both players often play tie-break sets(e.g., 7-6).
Would you like betting tips for a specific match or tournament?