Segui appeared in 33 games for Boston in their American League championship season, posting a 2-5 record with a 4.82 earned run average over 71 innings of work.
He would miss the 1976 season before joining the Seattle Mariners team for their inaugural 1977 year, a forgettable one for Segui as he went 0-7 with a bloated 5.69 ERA in his swan-song.
For his 15-year career he would go 92-111 with a 3.81 ERA over 639 games, 171 of them starts, leading the A.L. in ERA in 1970 with a 2.56 mark when he split the year between starting and relieving for the Oakland A’s.