Duncan Weir's penalty edged Glasgow ahead in the dying minutes of the match

Ospreys has no answer to the questions posed by Glasgow's lineout driving maul and that proved to be the difference in a match that could have gone either way.

Ironically, it was Ospreys own driving lineout that set up the opening score. Glasgow managed to bring the maul down just inches short of the line before Keiran Williams went over for the try. Jack Walsh added the extras.

The hosts could have had a second try when a grubber kick from scrum-half Reuben Morgan-Williams rolled over the try line. Matt Protheroe won the race to the ball but it was touched down on the dead ball line to leave Glasgow off the hook.

Ospreys' Williams was forced from the field with a head injury - Duncan Weir received a yellow card having made direct contact with the centre's head.

Walsh extended the home side's lead with three points from the kicking tee.

Glasgow had barely been in the game but three minutes before the interval they struck when hooker Jonny Matthews claimed his 28th try off the back of a driving lineout. Weir converted his try to make it 10-7 at the break.

The Ospreys made the worst possible start to the second-half when Matthews drove over the line for his second try off the back of another driving lineout.

Things went from bad to worse for Ospreys when Glasgow's Sione Vailanu claimed their third try with Weir converting.

Almost immediately, slack play from Glasgow gave Ospreys a penalty which Walsh kicked to get them back into the game.

A poor Glasgow lineout gifted possession to Ospreys and they turned the game on its head again with a kick through from Luke Morgan gathered by Morgan-Williams for the try with Walsh adding a further two points.

Ospreys thought they'd won it when Walsh nudged them ahead with three points from the kicking tee, but ill-discipline from Garyn Phillips allowed Weir to kick a fine penalty and give Glasgow the lead once more.

there was a further blow to Ospreys' hopes when Justin Tipuric received a yellow card for taking Tom Jordan out in the air before Allan Dell sealed Glasgow's victory with their bonus point try.

Glasgow head coach Franco Smith said: "We obviously planned for a bonus point, but not in that manner.

"Ospreys were excellent early on and we had to fight on to stay in the game

"Our maul was doing well so we knew if we could get up field we could have that chance to win late on. We want to play expansively as well, but the line-out is part of our DNA.

"It's a good start to the season and we're going to build on that."