Win more if the outcome lands within a range

A bookmaker's middle allows you to bet on overlapping lines from different bookmakers and win both bets if the result falls within a specific range. Read more


We've just found 131 middles for your filter settings.

Of these, 126 middles offer a positive expected value.

To see middles with a positive expected value and lossless surebets-middles, please choose a plan.

Found 5 middles with Tennis and 31Bet |
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Examples with a low expected value
| ProfitBookmaker ▲▼ EventMarketOdds
-0.09%1.63 / 37.9%
-27.52% / 45.0%

Kalshi
Tennis
31/08
16:00
Korpatsch – Tagger
Tennis
Over 14.5
$7.36
31Bet
Tennis
31/08
16:00
Tagger, Lilli – Korpatsch, Tamara
WTA - US Open - 1/64 finals
Under 19
-0.12%3.56 / 21.8%
-17.99% / 64.0%

Betfair
Tennis
31/08
04:00
Kok Matsuda – Fa Meng
Zhangjiagang Challenger 2026
11-2
(6.5%)
£386.05
31Bet
Tennis
31/08
04:00
Matsuda, Koki – Meng, Fanming
Challenger - Zhangjiagang,China, Qualification
AH2(+1.5)
+ 1 middle for this event
-0.48%1.9 / 33.8%
-25.62% / 48.8%

Kalshi
Tennis
01/09
16:00
Bouzas Maneiro – Vidmanova
Tennis
Over 17.5
$0.76
31Bet
Tennis
01/09
16:00
Vidmanova, Darja – Bouzas Maneiro, Jessica
WTA - US Open - 1/64 finals
Under 22
+ 1 middle for this event