Has an MLB game ever ended 19-8?
It has. 19-8 has been a MLB final 26 times in 235,971 games. The first was Cleveland Spiders beat Boston Beaneaters on August 15, 1889; the latest was Oakland Athletics beat Baltimore Orioles on July 6, 2024.
That makes 19-8 the 163rd most common final score out of 330 that have ever occurred in MLB. One point away, 20-8 has happened 11 times and 19-9 has happened 16 times.