Sometimes an old athlete may want to come back for some special match. Some bettors might still bet on him despite of old age and lack of recent experiences in the sport. That is because of what we call nostalgia. They might recall the past memories or past performances of the athlete that may not necessarily reflect the recent performance of the athlete. So be careful when betting because you might just be nostalgic.
Most of the occurrences in this manners comes as a result of people inviting some of their favorites of time past to come and perform once more maybe after a very long time, while the intention I personally see on this kind of match olay is to have more of fun and in engaging the fans for more fun using some of their best of the olden days, of course we may choose to bet on the winner or not, as nothing is likely to change from the usual expectations, as long as we are aware of this set-up before gambling.