Table: tennis_match_results_19
Columns: outcome
date
surface
partner
opponents
score

Question: What date has an outcome of runner-up, and a Score of 6–4, 6–2, and a Opponents of gisela dulko flavia pennetta?
SQL: SELECT "date" FROM tennis_match_results_19 WHERE "outcome" = 'runner-up' AND "score" = '6–4, 6–2' AND "opponents" = 'gisela dulko flavia pennetta'