In this section the contribution of this study to the academic literature is discussed. The most important limitations of this study are summarized and some interesting directions for future research are discussed.
7.1 Contribution
As seen in the literature review in section 2, there was a lot of research on the favorite longshot bias in different kind of sports. Most of these studies are based on horseracing, football and soccer. Investigations on the favorite longshot bias in tennis are scarce, so a new research on the favorite longshot bias in the tennis sport will contribute to the existing literature. Cain et al. (2003) did some research on tennis, but they used a very small dataset whereby the results were doubtful. Forrest & Mchale (2007) actually did a valuable study on the favorite longshot bias in tennis tournaments. They used a dataset of 17.000 possible bets and found a favorite longshot bias. This study goes a step further by using a dataset of 37.220 possible bets, which is 219% bigger than the dataset of Forrest & Mchale (2007). In addition, the large dataset used in this investigation, will make this a valuable article that contribute to the existing literature.
7.2 Limitations & further research
Looking at the conclusion in section 6, we see that all hypothesis are reject by the data. In the literature review we did not find any articles that looked at the trend over the years of the favorite longshot bias in tennis matches. So there is no possibility compare the results of this study with a similar study. Also looking at the research method we do not find an explanation for the rejection of the hypothesis. The sample we used is not too small or biased. Also there is no question of noisy proxies or failed manipulation checks.
It is interesting to do further research on the trend over the years. In this study we looked at the trend over 5 years (2009-2013), but you probably have to have a bigger sample size which contain more years. For example, if you use data from the last 30 years, you might see a clearer trend than the trend over 2009 to 2013.
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Appendix Overview of ATP tournaments
-
|
Official name
|
Surface
|
Matches 2009-2013
|
Total odds
|
|
|
|
|
|
Grand Slam
|
|
|
|
|
Australian Open
|
Australian Open
|
Hard-court (o)
|
545
|
1.090
|
Roland Garros
|
Les Internationaux de France de Roland Garros
|
Gravel
|
609
|
1.218
|
Wimbledon
|
The Wimbledon Championships
|
Gras
|
599
|
1.198
|
US Open
|
US Open
|
Hard-court (o)
|
600
|
1.200
|
|
|
|
|
|
ATP World Tour Finals
|
|
|
|
|
Londen
|
Barclays ATP World Tour Finals
|
Hard-court (i)
|
75
|
150
|
|
|
|
|
|
ATP World Tour Masters 1000
|
|
|
|
|
Indian Wells
|
BNP Paribas Open
|
Hard-court (o)
|
454
|
908
|
Miami
|
Sony Open Tennis
|
Hard-court (o)
|
452
|
904
|
Monte Carlo
|
Monte-Carlo Rolex Masters
|
Gravel
|
261
|
522
|
Rome
|
Internazionali BNL d'Italia
|
Gravel
|
253
|
506
|
Madrid
|
Mutua Madrid Open
|
Gravel
|
255
|
510
|
Montréal/Toronto
|
Coupe Rogers
|
Hard-court (o)
|
157
|
314
|
Cincinnati
|
Western & Southern Open - Cincinnati
|
Hard-court (o)
|
257
|
514
|
Shanghai
|
Shanghai Rolex Masters
|
Hard-court (o)
|
256
|
512
|
Parijs
|
BNP Paribas Masters
|
Hard-court (i)
|
222
|
444
|
|
|
|
|
|
ATP World Tour 500
|
|
|
|
|
Rotterdam
|
ABN AMRO World Tennis Tournament
|
Hard-court (i)
|
141
|
282
|
Memphis
|
U.S. National Indoor Tennis Championships
|
Hard-court (i)
|
150
|
300
|
Acapulco
|
Abierto Mexicano Telcel
|
Gravel
|
148
|
296
|
Dubai
|
Dubai Duty Free Tennis Championships
|
Hard-court (o)
|
144
|
288
|
Barcelona
|
Barcelona Open Banc Sabadell
|
Gravel
|
252
|
504
|
Hamburg
|
bet-at-home Open - German Tennis Championships
|
Gravel
|
202
|
404
|
Washington
|
Citi Open
|
Hard-court (o)
|
209
|
418
|
Peking, Beijng
|
China Open
|
Hard-court (o)
|
147
|
294
|
Tokio
|
Rakuten Japan Open Tennis Championships
|
Hard-court (o)
|
150
|
300
|
Basel
|
Swiss Indoors Basel
|
Hard-court (i)
|
154
|
308
|
Valencia
|
Valencia Open 500
|
Hard-court (i)
|
146
|
292
|
|
|
|
|
|
ATP World Tour 250
|
|
|
|
|
Atlanta
|
BB&T Atlanta Open
|
Hard-court (o)
|
102
|
204
|
Auckland
|
Heineken Open
|
Hard-court (o)
|
130
|
260
|
Bangkok
|
Thailand Open
|
Hard-court (i)
|
132
|
264
|
Bastad
|
SkiStar Swedish Open
|
Gravel
|
130
|
260
|
Bogota
|
Claro Open Colombia
|
Hard-court (o)
|
118
|
236
|
Brisbane
|
Brisbane International
|
Hard-court (o)
|
138
|
276
|
Bucharest
|
BRD Nastase Tiriac Trophy
|
Gravel
|
135
|
270
|
Buenos Aires
|
Copa Claro
|
Gravel
|
147
|
294
|
Casablanca
|
Grand Prix Hassan II
|
Gravel
|
134
|
268
|
Chennai
|
Aircel Chennai Open
|
Hard-court (o)
|
143
|
286
|
Delray Beach
|
Delray Beach Open by The Venetian® Las Vegas
|
Hard-court (o)
|
143
|
286
|
Doha
|
Qatar ExxonMobil Open
|
Hard-court (o)
|
153
|
306
|
Dusseldorf
|
Power Horse Cup
|
Gravel
|
126
|
252
|
Eastbourne
|
Aegon International
|
Gras
|
133
|
266
|
Gstaad
|
Crédit Agricole Suisse Open Gstaad
|
Gravel
|
136
|
272
|
Halle
|
Gerry Weber Open
|
Gras
|
141
|
282
|
Houston
|
US Men's Clay Court Championship
|
Gravel
|
132
|
264
|
Kitzbuhel
|
bet-at-home Cup Kitzbühel
|
Gravel
|
106
|
212
|
Kuala Lumpur
|
Malaysian Open, Kuala Lumpur
|
Hard-court (i)
|
128
|
256
|
London
|
Aegon Championships
|
Gras
|
256
|
512
|
Marseille
|
Open 13
|
Hard-court (i)
|
134
|
268
|
Metz
|
Moselle Open
|
Hard-court (i)
|
127
|
254
|
Montpellier
|
Open Sud de France
|
Hard-court (i)
|
78
|
156
|
Moscow
|
Kremlin Cup by Bank of Moscow
|
Hard-court (i)
|
132
|
264
|
Munich
|
BMW Open
|
Gravel
|
139
|
278
|
Newport
|
Hall of Fame Tennis Championships
|
Gras
|
146
|
292
|
Nice
|
Open de Nice Côte d’Azur
|
Gravel
|
103
|
206
|
Oeiras**
|
Portugal Open
|
Gravel
|
129
|
258
|
Sao Paulo
|
Brasil Open 2013
|
Gravel (i)
|
51
|
102
|
San Jose
|
SAP Open
|
Hard-court (i)
|
143
|
286
|
's-Hertogenbosch
|
Topshelf Open
|
Gras
|
140
|
280
|
St. Petersburg
|
St. Petersburg Open
|
Hard-court (i)
|
142
|
284
|
Stockholm
|
If Stockholm Open
|
Hard-court (i)
|
131
|
262
|
Stuttgart
|
MercedesCup
|
Gravel
|
139
|
278
|
Sydney
|
Apia International Sydney
|
Hard-court (o)
|
128
|
256
|
Umag
|
Vegeta Croatia Open Umag
|
Gravel
|
133
|
266
|
Vienna
|
Erste Bank Open
|
Hard-court (i)
|
131
|
262
|
Vina del Mar
|
VTR Open
|
Gravel
|
77
|
154
|
Winston-Salem
|
Winston-Salem Open
|
Hard-court (o)
|
131
|
262
|
Zagreb
|
PBZ Zagreb Indoors
|
Hard-court (i)
|
141
|
282
|
|
|
Total
|
12.076
|
24.152
|
|
|
|
|
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