The Dodgers score 2 in the 1st off Bob Buhl‚ but then are shut out for the next 15 innings by Cubs pitching. Chicago scores in the 6th and 9th and finally in the 16th on a bases-loaded walk to George Altman. Dick Ellsworthis the winner over Howie Reed in the longest game of the year.

On May 23, 1965 — The Dodgers score 2 in the 1st off Bob Buhl‚ but then are shut out for the next 15 innings by Cubs pitching. Chicago scores in the 6th and 9th and finally in the 16th on a bases-loaded walk to George Altman. Dick Ellsworthis the winner over Howie Reed in the longest game of the year.

Source:
Baseball Reference May 23