Outside-halves Gareth Owen and Dan Parks swapped three penalties apiece as the Ospreys and Glasgow fought out a tame 9-9 Magners League draw at the Liberty Stadium.

The Ospreys led the game either side of the interval but two Parks penalties earned Glasgow a draw which takes them to second behind leaders Ulster on points difference.

There was a late change to the Ospreys line-up when Marty Holah pulled a hamstring in the warm-up and was replaced by Steve Tandy.

It provided another personnel problem for the Ospreys, who were already without 10 players on international duty and another 13 on the casualty list.

It was the Welsh region who went into the lead with a penalty for Owen on 14 minutes, a kick which was cancelled out by Parks seven minutes later.

Owen put the Ospreys into a 6-3 lead - which they were to hold until half-time - with a second penalty on 28 minutes.

There were more injury worries for the Ospreys when Filo Tiatia and Nikki Walker were involved in a sickening clash of heads. Walker, named in the Scotland squad, needed treatment for a cut under his eye.

At the start of the second half both Owen and Parks swapped penalties as referee Peter Fitzgibbon officiated the ruck area with an iron fist.

But it was from a scrum that the Ospreys were penalised, which allowed Parks to kick his third penalty and draw the scores level on 69 minutes.