what is the most lopsided extra inning victory in MLB history.?

Question

example, lets say its scorless in the tenth inning, the visiting team scores 15 runs in the top of the tenth & the home dosen't score in the bottom of the inning, the final score would be 15-0 in ten innings. Sounds funny but in MLB history it must have happend! Or something similar.

Answer 1

here is what i came up with:

San Francisco 8 vs New York 6
05-31-1964
23 Innings


Pittsburgh 6 at St. Louis 2
14 innings
04-08-1969

Answer 2

I'd say anytime that happens against the Cardinals would be pretty bad.