1977 was Pasarell's last full-time tour and he started the year very well with a last 16 appearance in the Australian Open losing to eventual runner up Guillermo Vilas. A semifinal at the South Australian Open including a win over Arthur Ashe (in their last match) and a quarterfinal at the American Airlines Games (a for runner of the Indian Wells event) with wins over Balázs Taróczy, Vijay Amritraj and Roscoe Tanner before losing narrowly to then world No. 4 Brian Gottfried in three sets. He then had a bad run of form signalling the slow down of his career. He finished ranked 77 on the ATP computer and 25 in the U.S. He had also started the year well in doubles with Erik van Dillen. In 1978, Pasarell's career continued to wind down he was not given a wild card to Wimbledon and lost in the first round of qualifying to Jan Šimbera 7–5, 6–4. In 1979, he qualified for both Wimbledon and the US Open and started to play veterans events. He made his last attempt to qualify for the main draw at Wimbledon in 1984 aged 40 when he was not invited to take part in the over 35's singles event and lost in the first round to Jeff Turpin. He continued to play regularly on the seniors' tour until the end of 1985 and then stopped playing completely in 1988. He returned in 1992 to play regularly in the US Open Seniors events until his last appearance in 2002, he also played in a veterans event in Puerto Rico in 1993.