Table schema:
CREATE TABLE table_name_99 (year INTEGER, play_by_play VARCHAR, sideline_reporter_s_ VARCHAR)

Question: What's the earliest year that Al Michaels was the play-by-play commentator, in which Lesley Visser and Dan Fouts were also sideline reporters?
SQL: SELECT MIN(year) FROM table_name_99 WHERE play_by_play = "al michaels" AND sideline_reporter_s_ = "lesley visser and dan fouts"