Rafael Nadal and Roger Federer have been the dominant figures on the list with the most finals at a single tournament, standing as the only players to achieve that at least 12 times. To make things even better, two great rivals have repeated that at multiple events, setting the record that will hardly be matched in the future.Federer was the only player with 12 ATP finals at three different stops in the calendar, and Nadal joined him last April after advancing into his 12th Barcelona Open title match. The Swiss played in 15 finals at home in Basel, an Open era record, backed by 13 finals in Halle and 12 at his beloved Wimbledon.On the other hand, Nadal has built his legacy around the clay …