Sanz/Nieto enter as the more proven pair at P1 level, with cleaner transitions and better point management under pressure than Lancha/Goenaga. In Buenos Aires’ typically slower, heavier conditions, long rallies and net consolidation favor the more structured duo, while the underdogs need sustained aggression to avoid being ground down. Prediction: Sanz/Nieto in 2 sets, with a tight first set if Lancha/Goenaga start fast.