The use of sports sponsorship as a marketing tool is in the rise. Estimates indicate that the values invested in this activity have grown over one thousand per cent in the last twenty years, reaching the total sum of US$ 21 billion in 2004. Despite the fact that the capital needed to conduct a sponsorship program is growing considerably, companies that invest in this kind of marketing activity are often not able to obtain the expected return. The main objective of this study is to examine sports sponsorship effectiveness on the consumers. In order to achieve this objective, The Brazilian National Soccer Team and its three official sponsors – Nike, Vivo and Guaraná Antarctica – were used as a case-study. The effectiveness of the sponsorship was evaluated according to two main factors: the correct recall of the sponsors and the increase of the purchase intention of sponsors’ products. Three different models were used to measure the sponsorship effectiveness: two of them to measure recall, and one to measure the increase of the purchase intention. A field research was then conducted with 382 individuals. Three different methods of statistical analysis were used to examine the data: Factor Analysis, Multiple Regression and Logistic Regression. Results showed that some factors have more influence on predicting recall than others. It was the case of the interest that individuals have for soccer, as well as the frequency that they watch sports events through television. Perceived similarity between the sponsors and the team has also influenced the recall of the sponsors, but in a different way for each one of the sponsors. Finally, research showed that the purchase intention tends to be affected by how positive individuals evaluate the brands, and also, when they perceive an image similarity between the sponsor and the Brazilian National Soccer Team.