On July 7, 1985 Floyd Youmans, ticketed for the minors after the game to make way for Bill Gullickson coming off the disabled list, pitches the last three innings to get his first major league win as the Expos outlast the Astros, 6 – 3, in 19 innings. A two-out error by Enos Cabell and a two-run single by Mike Fitzgerald do it for the Expos.
Source:
Baseball Reference July 7