- Written by Ora Bannon
- BBC Sport at Healy Park
Darren McCurry and Darragh Canavan turned the tide for Tyrone, who secured an impressive four-point win over Mayo to boost their hopes of staying in Division One.
The two sides faced each other 1-12 as Tyrone produced a great second half and earned two valuable league points.
League champions Mayo led 1-4 to 0-4 at half-time after Cillian O'Connor converted a penalty.
Tyrone were a transformed team after the break and managed to get through the game after Canavan's goal.
In Division 3, Down defeated Offaly 4-12 to 2-14 at Páirc Esler for their fourth successive league win.
The Red Hands were under serious pressure following back-to-back league losses, but their play in the second half was a sign that the team was needed more.
Canavan opened the scoring seven minutes into the game, scoring on Tyrone's only play of the first half.
Tyrone was too reluctant, but Mayo's pace and running ability soon became apparent and he raced ahead with a 0-3 to 0-1 lead. Stephen Cohen scored and Cillian O'Connor, a late addition to the starting team, had two free shots.
Hart equalized with two free shots, but it was a brief respite for Tyrone before a crucial and controversial penalty call.
Cormac Quinn floored Enda Hesion and his free shot went wide of the square, but it was deemed a scoring chance, so Quinn was given a black card and Mayo was awarded a penalty.
Cillian O'Connor buried the ball high in the top corner, helping Mayo take a 1-4 to 0-4 lead at the interval.
But Tyrone came out on a different team and played with more urgency and greed in his tackling.
McCurry's introduction at half-time was key and he, along with Canavan, tormented Mayo in the second half.
Both scored stylishly from play in front of Canavan's goal, getting between two players and slotting the ball low to Hennelly.
This gave Tyrone a 1-8 to 1-5 lead for the first time since the beginning of the game, electrifying the crowd.
The sides drew 1-12, with Seanie O'Donnell adding the only goal for Tyrone in the second half, who was later carried off on a stretcher.
Fergal Borland and sub Ryan O'Donoghue each scored twice for Mayo, but Tyrone held on, unwilling to give up their precious cushion.
Further extend the division's three-game winning streak
It wasn't an easy game, but Down remained perfect as they won by four points against Offaly.
After a bright start for Offaly, Down found the back of the net through Liam Kerr in the sixth minute to take a three-point lead.
As the first half wore on, Down were able to keep the scoreboard moving with a number of goals from Pat Haven, but Offaly conspired to miss three goalscoring chances of their own. Two of them resulted in goals and one ended in a save. John O'Hare.
In the second half, Down seemed to be well on their way to gaining the upper hand when Odran Murdoch curled a shot into the bottom corner to make it 2-9 to 0-7, and when Kerr scored the second goal that looked like the game was over. It looked like.
Instead, the game started out manic with four goals in six minutes. Down's Kerr, Offaly's Jack Bryant, Down's Ryan Johnston and Offaly's Keith O'Neill found the back of the net in quick succession.
Once things calmed down, Pat Haven scored two vital goals and Down regained their momentum in the closing stages.