Stanhouse was traded, along with Pete Mackanin, from the Rangers to the Expos for Willie Davis at the Winter Meetings on December 5, 1974.

[1] Shuttled back and forth from the bullpen to the starting rotation with the Rangers and Expos, he was acquired along with Joe Kerrigan and Gary Roenicke by the Orioles from Montreal for Rudy May, Randy Miller and Bryn Smith at the Winter Meetings on December 7, 1977.

[2] Stanhouse excelled in 1978 when Manager Earl Weaver employed him as a full-time closer.

Frequently his tactics would lead to dangerous situations in close games with multiple base-runners, and send the chain-smoking Weaver pacing back and forth in the dugout in agony.

This resulted in Weaver nicknaming Stanhouse Fullpack, referring to the number of cigarettes consumed while watching him pitch.