There is no one definitive answer to this question. Some people swear by betting on the underdog, while others prefer to bet on the favourite. There are a number of different strategies that can be employed when betting on soccer, and it really depends on the individual's preferences as to what works best. Some people like to study the statistics and form of the teams involved before placing a bet, while others simply go with their gut feeling. Ultimately, it is up to the individual to decide what works best for them.