On August 9, 1959 — 1959 – The Pirates, down 3 – 1 to the Cubs in the 9th, tie the game, then win, 5 – 3, in the 10th. Elroy Face wins in relief to go 15-0. The win is the 11th extra-inning victory in a row for the Pirates.

Source:
Baseball Reference August 9
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game