Bohan reads the riot act after Guthrie leads Donegal past Dubs
Home defeats for both of last year's All-Ireland finalists in the opening round of the League sent shockwaves through the competition.
Karen Guthrie's 1-4 helped Donegal beat Dublin 1-11 to 1-7 - a defeat that gave the All-Ireland winners' manager Mick Bohan plenty of food for thought.
"I'm more disappointed by the way we played. If we had lost the game but we had gone after it with the right approach, I'd probably feel a bit better about it," said Bohan.
With eight survivors from their All-Ireland winning side from September, Dublin trailed 1-5 to 0-1 at the break.
Nicole Owens landed a couple of points to settle Dublin after the break, but three in a row from Geraldine McLaughlin took Donegal clear.
Cork manager Ephie Fitzgerald also demanded more from his players after they lost 1-8 to 0-5 to Galway in Mallow.
Captain Tracey Leonard scored four points and Roisin Leonard bagged the crucial goal just before half-time for Galway.
"I wasn't a bit happy with our work-rate. I just told the girls we have standards we expect and we didn't live up to them," said Fitzgerald.
Rachel Kearns' 1-6 put Mayo on the road to a 2-11 to 0-12 victory over Tipperary at Swinford Amenity Park, while Grace Kelly also hit the net.
Westmeath got their season off to the perfect start as Leanne Slevin landed five points in a 1-14 to 0-7 over against an out-of-sorts Monaghan.
This game was almost done and dusted at the break as Westmeath led 1-10 to 0-4 thanks to Lucy McCartan's goal.
In Division 2, Waterford won the south-east derby against Wexford, 0-12 to 0-3, with Maria Delahunty landing four points. Michelle Ryan was in the Déise side as she begins a 19th inter-county season.
There was a big win for Armagh over Laois, while a late Kerry comeback earned them a draw against Clare, and Tyrone pulled off a similar escape to draw with Cavan.
In Division 3, Kildare and Roscommon got their campaigns off to winning starts before Down fired six goals past Offaly.
The Sligo v Meath fixture was postponed until the weekend of February 16/17 due to a frozen pitch.