Ramos made his Dortmund debut on 13 August 2014, coming on as a second-half substitute in Dortmund's 2–0 victory over Bayern Munich in the DFL Supercup. His first Dortmund goal came three days later, scoring Dortmund's final goal of their 4–1 victory over Stuttgart Kickers in the first round of the DFB Pokal. On 29 August, Ramos scored his first league goal for Borussia Dortmund against FC Augsburg, resulting in a 3–2 win, Dortmund's first of the Bundesliga season. On 13 September, Ramos scored his second goal for Dortmund against SC Freiburg and also provided an assist for Shinji Kagawa in a 3–1 win. He scored his first goals in Europe for Dortmund on 1 October, scoring twice after coming on as a substitute in a 3–0 win against Anderlecht in the Champions League.