<page_title> Celtic F.C. in European football </page_title> <section_title> By season </section_title> <table> <cell> 1986–87 <col_header> Season </col_header> </cell> <cell> European Cup <col_header> Competition </col_header> </cell> <cell> First round <col_header> Round </col_header> </cell> <cell> Republic of Ireland Shamrock Rovers <col_header> Opposition </col_header> </cell> <cell> 3–0 <col_header> Aggregate </col_header> </cell> </table>
At the European Cup in 1986–87, Celtic eliminated Shamrock Rovers by 3–0 on aggregate in the first round.