The Devon Senior Cup is an annual rugby union league and cup club competition organized by the Devon Rugby Football Union. It was first introduced in the 1886-87 season and the inaugural competition was won by Tiverton. During the early years of the cup the format changed several times from a knock-out competition to a league format, then to hybrid league/cup, then back to being a knock-out cup once again. The competition also was had periods of inactivity, with World War I preventing play for a number of seasons and then the cup being cancelled in the 1930s before being reintroduced for the 1969-70 season when it was won by St. Luke's College (now Exeter University). The Havill Plate was introduced in the 1970s for teams knocked out of the first round of the cup which would continue until