Derry have been relegated to Division Two of the National Football League.
A 2-19 to 1-17 loss to Mayo at Celtic Park has condemned last year's Division One champions to the drop this afternoon.
Jordan Flynn and Frank Irwin scored the goals for Mayo, who have moved up to fourth place.
Tyrone beat Donegal by 0-25 to 0-19 in Ballybofey to take the race for the other relegation spot down to the last day.
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Monaghan remain at the summit of Division Two after beating Meath by 1-29 to 1-20 at Navan.
Cavan edged out Roscommon by 0-22 to 0-20 to keep their promotion hopes alive.
Mark Cronin scored eight-points as Cork took a big step toward safety with a 1-23 to 0-18 win against Louth at Pairc Ui Chaoimh.
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Offaly are the new leaders of Division Three of the National Football League.
Rory Egan and Dylan Hyland's goals helped the Faithful to overcome their promotion rivals Kildare by 2-17 to 0-17 in Tullamore.
Sligo won 1-18 to 1-15 at Antrim to move out of the relegation places.
