In , Miller ended with a 5–5 record and three saves in 48 appearances (including 11 starts) with a 3.02 ERA. The Twins faced the Baltimore Orioles in the 1969 American League Championship Series, the first year of intraleague playoffs with the split of each league into Eastern and Western divisions. In the best three-out-of-five format, the Twins lost the first two games and called on Miller to start game three. Miller faced off against Jim Palmer, but lasted only innings, giving up five hits and three runs (only one of them earned) before being removed by manager Billy Martin.