David Goodwillie is entering the fray at the expense of Adam Rooney - Aberdeen will hope the fresh man can add a bit more firepower.

With a lack of the flow seen in the first half at Pittodrie, both teams look content to sit tight and go forth with caution as McInnes's charges do all they can not to concede an away goal.

Andy Grant tweets:, external "Great result for Saints, hopefully they can go on a run. Were any of the Scots sides seeded?"

BBC Scotland's Jim Spence in Switzerland

"Darkness falls on Lucerne but it's sunshine for St Johnstone with a 1-1 draw. Tommy Wright on @BBC Sportsound soon."

Antonia comes on for Hoesen as Groningen shuffle their pack. Can either side break the deadlock?

Stephen McManus sees his shot parried by Jonsson before Johannsson spurns a great chance to equalise for the visitors. Entertaining fare at Fir Park, where it remains 2-1 to the Steelmen.

Ryan Jack and Adam Rooney are probing for an opening and both look up for the cause as they combine to ask questions of the Groningen defence.

Aberdeen continue to plug away in search of the opener at Pittodrie but the Groningen defence is holding firm. Will Derek McInnes be tempted to bring on David Goodwillie?

BBC Sportsound pundit Willie Miller

"Aberdeen would be happy to take a 1-0 lead into the second leg."

The second half begins as the first ended, with Groningen - on their first European journey for seven years - in the ascendency and controlling possession.

Image source, SNS

Pittodrie is packed for this Europa League qualifier...

We're getting under way in the second half at Pittodrie and Fir Park. Can Motherwell see this out to take a lead into the second leg?

Can the Dons break the deadlock?

BBC Scotland's Richard Wilson at Fir Park

"Josh Law certainly made his mark, scoring twice in his first appearance for Motherwell, and he was a constant danger for the home side playing just off John Sutton.

"However, Stjarnan pulled one goal back when a shot hit Keith Lasley's hand inside the area, Olafur Karl Finsen converting the penalty. Celebrations were restrained by the players, but the 15 or so Stjarnan fans made the most of the room they have in the stand to themselves behind the goal."

Debutant Josh Law fires a brace to put the Steelmen in command at Fir Park. Despite that penalty before the break, Stuart McCall will be purring in the dressing room.

It's tighter at Pittodrie than a man's waistband after two weeks of pasta and fine wine in Sorrento. Goalless but plenty to keep us occupied. There's definitely goals in this game...

Aberdeen almost caught out after slack defending allows Danny Hoesen his side's first opportunity. He got in a shot from a tight angle but was unable to convert.

Image source, SNS

Adam Rooney is doing his best to provide a creative spark for the Dons, but can they make the breakthrough before the break?

St Johnstone FC

"Full-time and its an impressive 1-1 draw for Saints against @FCL_1901 seccond leg next Thursday in Perth"

The Icelandic outfit pull a goal back after Keith Lasley is adjudged to have handled in the box. Up trots Olafur Finsen to fire past Dan Twardzik. Game on!

St Johnstone boss Tommy Wright will give a wee Morecame & Wise-style jig of delight when he boards the team bus heading to the airport tonight.

A very credible 1-1 draw - courtesy of Steven MacLean - gives the Saints a great chance to progress and punish their opponents in Perth.

Ian McArthur tweets: ", externalHas anyone stamped on the keeper yet?"

Not yet but he did have to vault a fence and Niall McGinn to escape a snarling and snapping Alsatian...

Aberdeen on the ascendency, if there is a goal to come, it seems certain it will be for the hosts. Half an hour gone of an entertaining Europa League qualifier at Pittodorie.