Win more if the outcome lands within a range

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

For your filter settings we just found 54 middles.

Of these, 22 middles offer positive expected value.

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

Found 31 middles with Tennis and 31Bet |
| Back to my middles (Auto updates — Shift+P to start them) (Auto updates — Shift+P to pause them)

Examples with low expected value ↓
▼ | Profit Bookmaker ▲▼ Event Market Odds
0.89% / 43.5%
-29.70% / 40.6%
Complaints

 888sport
Tennis 		31/07
01:00 		Coco Gauff – Veronika Kudermetova
Canada - WTA Montreal 		11-2 1st set
1.44
31Bet
Tennis 		31/07
17:30 		Gauff, Coco – Kudermetova, Veronika
WTA - Montreal, Canada 		AH2(+3.5) 1st set
1.37
+ 1 middle for this event
0.84% / 21.3%
-16.88% / 66.2%
Complaints

 Betfair
Tennis 		31/07
14:00 		Evans – Mi Zheng
Lexington Challenger 2025 		21-2 - lay
1.86 (6.5%)

£25.21
2.16
31Bet
Tennis 		31/07
15:00 		Evans, Daniel – Zheng, Michael
Challenger - Lexington, USA 		AH2(+1.5)
1.54
+ 2 middles for this event
0.75% / 13.9%
-11.53% / 77.0%
Complaints

 31Bet
Tennis 		31/07
11:10 		Van de Zandschulp, Botic – Masur, Daniel
Challenger - Hagen, Germany 		AH1(−5.5)
1.74
888sport
Tennis 		31/07
11:10 		Botic Van De Zandschulp – Daniel Masur
Germany - ATP Challenger Hagen 		AH2(+6.5)
1.80
+ 2 middles for this event
0.56% / 20.4%
-16.46% / 67.1%
Complaints

 Betfair (IT)
Tennis 		31/07
11:00 		Paris/Willis – Jecan/Pavel
Porto Challenger 2025 		21-2 - lay
1.44

€127.52
3.30
31Bet
Tennis 		31/07
11:00 		Paris J / Willis M – Jecan A / Pavel B
Challenger - Porto, Portugal Double 		AH2(+1.5)
2.00
0.45% / 20.2%
-16.46% / 67.1%
Complaints

 31Bet
Tennis 		31/07
00:40 		Fuchs Z / Thayne W – Basavareddy N / Suresh D
Challenger - Lexington, USA, Doubles 		AH1(+1.5)
1.41
Stoiximan (GR)
Tennis 		31/07
00:40 		Zachary Fuchs / Wally Thayne – Nishesh Basavareddy / Dhakshineswar Suresh
Challenger - Lexington - Doubles 		21-2
2.05
+ 2 middles for this event
0.39% / 57.5%
-36.25% / 27.5%
Complaints

 31Bet
Tennis 		31/07
22:00 		Tien, Learner – Opelka, Reilly
ATP - Toronto, Canada 		Over 7.5 1st set
1.02
MostBet
Tennis 		31/07
16:00 		Tien L – Opelka R
ATP - Toronto. Hard 		Under 10.5 1st set
1.70
+ 2 middles for this event
0.15% / 36.2%
-26.49% / 47.0%
Complaints

 31Bet
Tennis 		30/07
23:00 		Ruzic, Antonia – Muchova, Karolina
WTA - Montreal, Canada 		Over 12 2nd participant
1.60
Betaland (IT)
Tennis 		30/07
23:00 		Ruzic Antonia – Muchova Karolina
WTA - Montreal (WTA 1000) 		Under 13.5 2nd participant
1.36
+ 4 middles for this event
0.07% / 29.7%
-22.84% / 54.3%
Complaints

 31Bet
Tennis 		31/07
17:30 		Mboko, Victoria – Bouzkova, Marie
WTA - Montreal, Canada 		Over 12 1st participant
1.75
Betano (BR)
Tennis 		31/07
17:30 		Victoria Mboko – Marie Bouzkova
WTA - Montreal (W) 		Under 13.5 1st participant
1.38
+ 1 middle for this event
0.05% / 24.8%
-19.84% / 60.3%
Complaints

 31Bet
Tennis 		30/07
22:50 		Tsitsipas, Stefanos – O'connell, Christopher
ATP - Toronto, Canada 		Over 8.5 1st set
1.18
Betfair SB
Tennis 		30/07
22:50 		Tsitsipas – O'Connell
ATP Toronto 2025 		Under 9.5 1st set
2.50
+ 4 middles for this event
0.04% / 19.1%
-16.00% / 68.0%
Complaints

 31Bet
Tennis 		31/07
10:30 		Jianu, Filip Cristian – Caniato, C
ITF Men - ITF M25 Pitesti 		AH1(+1.5)
1.40
Betfair SB
Tennis 		31/07
10:30 		Filip Cristian Jianu – Carlo Alberto Caniato
ITF Romania Futures 		21-2
2.10
+ 2 middles for this event
0.02% / 23.9%
-19.26% / 61.5%
Complaints

 31Bet
Tennis 		31/07
16:00 		Khachanov, Karen – Nava, Emilio
ATP - Toronto, Canada 		Over 8.5 1st set
1.23
EpicBet
Tennis 		31/07
16:05 		Karen Khachanov – Emilio Nava
Canada - ATP Toronto 		Under 9.5 1st set
2.35

See also: surebets with 31Bet or valuebets with 31Bet.

Show only with: Air hockey, Air hockey 2x2, American football, Arena of Valor, Australian football, Badminton, Bandy, Baseball, Basketball, Basketball 3x3, Basketball 4x4, Beach football, Beach handball, Beach volleyball, Bowls, Martial arts, Call of Duty, Chess, What Where When, Counter-Strike, Cricket, Curling, Darts, Deadlock, Dota, E-Basketball, E-Football, E-Hockey, E-Tennis, E-Volleyball, Field hockey, Floorball, Football, Football 3x3, Football 4x4, Football 5x5, Futsal, Gaelic football, Golf, Handball, Hockey, Hockey 3x3, Hurling, King of Glory, Lacrosse, League of Legends, Mobile Legends, NBA2K, Netball, Overwatch, Pesäpallo, Rainbow, Rocket League, Rugby, Basketball (SRL), Cricket (SRL), Football (SRL), Tennis (SRL), Short Hockey, Snooker, StarCraft, Table tennis, Tennis, Valorant, Volleyball, Warcraft, or Water polo.