Watch out for the goals from both games appearing on the BBC Sport website and join us again on Saturday for a four-game top-flight programme, including champions Linfield against Crusaders.
Bye for now.
Game. Set. Match.
Larne 4-2 Coleraine
Lee Lynch kept his cool to wrap up the points.
Video content
Video caption: Lee Lynch wraps it up for the Inver menLee Lynch wraps it up for the Inver men
FULL-TIME
Larne 4-2 Coleraine
Of course it was Ben Doherty who would have the final say against his former side...and he didn't hold back in the celebration. Wow.
Video content
Video caption: Ben Doherty strikes against his old clubBen Doherty strikes against his old club
FULL-TIME
Portadown 1-1 Glenavon
The final whistle sounds and the points are shared after a breathless last few minutes at Shamrock Park.
We waited 90 minutes for a goal at Shamrock Park and then, much like buses, two came along at once!
1-1 it ends.
GOAL
Portadown 1-1 Glenavon
...make that two goals in added time at Shamrock Park!
Late, late drama in the mid-Ulster derby as Paul Finnegan taps in at the back post from Ruairi Croskery's cross after the latter was involved in a neat one-two. That in the first minute of injury-time.
Then FOUR minutes into time added on Michael O'Connor finds the top corner with a sublime free-kick to equalise.
Andrew Waterworth has certainly posed a more attacking threat for Glenavon.
His diving header from Peter Campbell's cross flies just wide of the left-hand post and then the forward drags a shot inches wide soon after.
GOAL
Larne 4-2 Coleraine
Lee Lynch wraps it up in injury-time. What a game. What a start to the season!
GOAL
Larne 3-2 Coleraine
WHO ESLE BUT BEN DOHERTY?! Of course it was, it was never going to be anyone else.
Two minutes to play!
Aaron starrin' for Coleraine
Larne 2-2 Coleraine
PacemakerCopyright: Pacemaker
Aaron Traynor does a celebratory jig after scoring Coleraine's first equalising goal at Inver ParkImage caption: Aaron Traynor does a celebratory jig after scoring Coleraine's first equalising goal at Inver Park
Post update
Larne 2-2 Coleraine
...but Larne hit back through Davy McDaid.
A quiet night in the library....not!
Video content
Video caption: McDaid levels for LarneMcDaid levels for Larne
Post update
Larne 2-2 Coleraine
Matthew Shevlin had given Coleraine the lead...
Video content
Video caption: Matthew Shevlin heads Coleraine into the leadMatthew Shevlin heads Coleraine into the lead
HITS THE WOODWORK
Portadown 0-0 Glenavon
The woodwork denies Portadown the opening goal as winger Ruairi Croskery's header cannons off the post.
Croskery took advantage of a slack back header but was just unable to find the target.
'Close but no cigar', as they say, for Matthew Tipton's side.
Mid-Ulster derby in focus
Portadown 0-0 Glenavon
PacemakerCopyright: Pacemaker
Portadown skipper Lee Bonis and Glenavon defender Mark Haughey in aerial actionImage caption: Portadown skipper Lee Bonis and Glenavon defender Mark Haughey in aerial action
GOAL
Larne 2-2 Coleraine
Larne are level through Davy McDaid!
It was never going to end like that, was it? McDaid reacts quickest from Jeff Hughes' header across goal and the striker opens his account for the season.
Who fancies another goal?
GOAL
Larne 1-2 Coleraine
Matthew Shevlin completes the turnaround with just over 20 minutes to play!
Coleraine new boy Conor McKendry plays a cross in and Shevlin is on hand to head home off the crossbar! Instant impact from the new signing.
It's never quiet between these two sides...not that we're complaining!
Heads up!
Larne 1-1 Coleraine
Coleraine's full-backs combine as Aaron Traynor heads home Lyndon Kane's delivery.
It's not quite Trent Alexander-Arnold to Andy Robertson but it's not far off!
Video content
Video caption: Traynor heads in the Bannsiders equaliserTraynor heads in the Bannsiders equaliser
SUBSTITUTION
Portadown 0-0 Glenavon
....but no ordinary substitution as Irish League goalscoring legend Andrew Waterworth comes on to make his competitive bow for Glenavon, replacing Daniel Purkis.
Can the former Linfield striker make himself an instant hero and find a goal to break the stalemate at Shamrock?
RED CARD
Larne 1-1 Coleraine
Wait? What year is this?
Tim McCann and Willie Murphy are both sent off for a, let's say disagreement, on the touchline after a tackle by Davy McDaid.
Play resumes with all 22 players on the pitch but Tiernan Lynch and Oran Kearney will be without their right-hand men for the rest of this one.
CLOSE!
Portadown 0-0 Glenavon
The game is opening up now and the chances beginning to flow.
Ruairi Croskery passes up a gilt-edged opportunity for Portadown as he sends his header from the edge of the six-yard box over the bar from Lee Bonis's cross from the right.
Live Reporting
Richard Petrie and Andy Gray
All times stated are UK
Video caption: Lee Lynch wraps it up for the Inver menLee Lynch wraps it up for the Inver men Video caption: Ben Doherty strikes against his old clubBen Doherty strikes against his old club 
PacemakerCopyright: Pacemaker Aaron Traynor does a celebratory jig after scoring Coleraine's first equalising goal at Inver ParkImage caption: Aaron Traynor does a celebratory jig after scoring Coleraine's first equalising goal at Inver Park Video caption: McDaid levels for LarneMcDaid levels for Larne Video caption: Matthew Shevlin heads Coleraine into the leadMatthew Shevlin heads Coleraine into the lead 
PacemakerCopyright: Pacemaker Portadown skipper Lee Bonis and Glenavon defender Mark Haughey in aerial actionImage caption: Portadown skipper Lee Bonis and Glenavon defender Mark Haughey in aerial action Video caption: Traynor heads in the Bannsiders equaliserTraynor heads in the Bannsiders equaliser
Latest PostThe final whistle
That's about all from us after a hugely dramatic opening night of action in the Irish Premiership.
Larne get off to a flying start, ultimately coming out on top after a topsy-turvy six-goal thriller at Inver Park.
Portadown and Glenavon take a point apiece from the mid-Ulster derby.
Read the report of the two games here.
Watch out for the goals from both games appearing on the BBC Sport website and join us again on Saturday for a four-game top-flight programme, including champions Linfield against Crusaders.
Bye for now.
Game. Set. Match.
Larne 4-2 Coleraine
Lee Lynch kept his cool to wrap up the points.
Video content
FULL-TIME
Larne 4-2 Coleraine
Of course it was Ben Doherty who would have the final say against his former side...and he didn't hold back in the celebration. Wow.
Video content
FULL-TIME
Portadown 1-1 Glenavon
The final whistle sounds and the points are shared after a breathless last few minutes at Shamrock Park.
We waited 90 minutes for a goal at Shamrock Park and then, much like buses, two came along at once!
1-1 it ends.
GOAL
Portadown 1-1 Glenavon
...make that two goals in added time at Shamrock Park!
Late, late drama in the mid-Ulster derby as Paul Finnegan taps in at the back post from Ruairi Croskery's cross after the latter was involved in a neat one-two. That in the first minute of injury-time.
Then FOUR minutes into time added on Michael O'Connor finds the top corner with a sublime free-kick to equalise.
FULL-TIME
Larne 4-2 Coleraine
Throw in whatever footballing cliché about Ben Doherty's goal being in the script or written in the stars, but we may have just witnessed the game of the season already.
Can these two play each other every week?
CLOSE!
Portadown 0-0 Glenavon
Andrew Waterworth has certainly posed a more attacking threat for Glenavon.
His diving header from Peter Campbell's cross flies just wide of the left-hand post and then the forward drags a shot inches wide soon after.
GOAL
Larne 4-2 Coleraine
Lee Lynch wraps it up in injury-time. What a game. What a start to the season!
GOAL
Larne 3-2 Coleraine
WHO ESLE BUT BEN DOHERTY?! Of course it was, it was never going to be anyone else.
Two minutes to play!
Aaron starrin' for Coleraine
Larne 2-2 Coleraine
Post update
Larne 2-2 Coleraine
...but Larne hit back through Davy McDaid.
A quiet night in the library....not!
Video content
Post update
Larne 2-2 Coleraine
Matthew Shevlin had given Coleraine the lead...
Video content
HITS THE WOODWORK
Portadown 0-0 Glenavon
The woodwork denies Portadown the opening goal as winger Ruairi Croskery's header cannons off the post.
Croskery took advantage of a slack back header but was just unable to find the target.
'Close but no cigar', as they say, for Matthew Tipton's side.
Mid-Ulster derby in focus
Portadown 0-0 Glenavon
GOAL
Larne 2-2 Coleraine
Larne are level through Davy McDaid!
It was never going to end like that, was it? McDaid reacts quickest from Jeff Hughes' header across goal and the striker opens his account for the season.
Who fancies another goal?
GOAL
Larne 1-2 Coleraine
Matthew Shevlin completes the turnaround with just over 20 minutes to play!
Coleraine new boy Conor McKendry plays a cross in and Shevlin is on hand to head home off the crossbar! Instant impact from the new signing.
It's never quiet between these two sides...not that we're complaining!
Heads up!
Larne 1-1 Coleraine
Coleraine's full-backs combine as Aaron Traynor heads home Lyndon Kane's delivery.
It's not quite Trent Alexander-Arnold to Andy Robertson but it's not far off!
Video content
SUBSTITUTION
Portadown 0-0 Glenavon
....but no ordinary substitution as Irish League goalscoring legend Andrew Waterworth comes on to make his competitive bow for Glenavon, replacing Daniel Purkis.
Can the former Linfield striker make himself an instant hero and find a goal to break the stalemate at Shamrock?
RED CARD
Larne 1-1 Coleraine
Wait? What year is this?
Tim McCann and Willie Murphy are both sent off for a, let's say disagreement, on the touchline after a tackle by Davy McDaid.
Play resumes with all 22 players on the pitch but Tiernan Lynch and Oran Kearney will be without their right-hand men for the rest of this one.
CLOSE!
Portadown 0-0 Glenavon
The game is opening up now and the chances beginning to flow.
Ruairi Croskery passes up a gilt-edged opportunity for Portadown as he sends his header from the edge of the six-yard box over the bar from Lee Bonis's cross from the right.