Attendance in the Kingdome was 57,762. The Mariners' starting pitcher was Diego Segui who was a member of the Seattle Pilots club in 1969. The first batter was Dave Collins and the first hit was by Jose Baez.
The Ms got their first run (Dave Baez) and their first win on April 8, 1977, with a score of 7-6 against the Angels. The Mariners ended the year with a 64 and 98 record.