 In 1984–1985, Nimphius played in all 82 games for Dallas, starting 40, as the Mavericks finished 44–38.Nimphius averaged 6.1 points, 5.0 assists, 2.2 assists and 1.5 blocks in 24 minutes.Dallas was defeated by Portland in the playoffs 3–1 and Nimphius played sparingly in the series.