Table: athlete_results_2
Columns: athlete
event
elimination_poule
round_of_16
quarterfinals
semifinals
final

Question: How many athletes were named federico muller?
SQL: SELECT COUNT("quarterfinals") FROM athlete_results_2 WHERE "athlete" = 'Federico Muller'

Question: What was the round of 16 result for felipe saucedo?
SQL: SELECT "round_of_16" FROM athlete_results_2 WHERE "athlete" = 'Felipe Saucedo'