In the match between Emilio Nava and Harold Mayo, it is recommended to give preference to Mayo's victory. Nava has shown a decline in form recently, despite some minor success earlier in the year. His win-loss ratio for the season has leveled out, and after a defeat in the first round of a tournament earlier this month, there are concerns about his form. On the other hand, Harold Mayo, despite a three-game losing streak, appears more stable and promising at the moment. His most recent defeat came in the final of a challenger in Ilkley, where he lost to Nava. However, it's worth noting that Mayo is currently in better form and has shown confident play in previous matches, including defeating a French opponent. Although Mayo has not played on outdoor hard courts since March, his recent performances and fresh experience of beating Nava on grass suggest that he can put up a good game and secure a win in this match. Therefore, a bet on Mayo's victory seems more justified and likely, offering odds of 1.72. Factors such as players' form, recent match results, and the experience of defeating a specific opponent all point towards Harold Mayo having higher chances of success in this match.