[2] Moore made his Major League debut in "mop up duty" following a poor outing by Gary Gentry.

Former minor league teammate Ken Singleton, now with the Montreal Expos, drove in the tying run to give Moore the no-decision.

[7] Cardinal manager Red Schoendienst did not seem to have much faith in Moore, as he was used strictly in mop up duty for the entirety of his two month stay with the club.

[9] A week later, despite pitching well, he suffered a hard luck loss on his record against the California Angels,[10] and once again found himself in mop up duty for the remainder of the season.

Ineffectiveness and sloppy play on the field prevented that from happening; however, Seattle did manage to mount a comeback in the ninth inning for the historic victory.

Moore was dealt along with Carlos López from the Mariners to the Baltimore Orioles for Mike Parrott at the Winter Meetings on December 7, 1977,[15] but he was cut during Spring training 1978.

Through four MLB seasons, his career statistics posted include making 42 game appearances, going 2-4, with 40 strikeouts, 40 walks, and a 5.40 ERA, in 88 innings pitched.