Andrew Kelly's last-gasp score for Edinburgh dealt a hammer blow to the Ospreys' Magners League title hopes and gave the Scots a narrow 32-30 win.

Shane Williams grabbed the game's opening try on his 100th appearance for the Ospreys and fellow Lions wing Tommy Bowe also crossed.

But James Hook suffered a nightmare with the boot missing the conversions paving the way for Edinburgh to hit back through two Ben Cairns tries.

Both Simon Webster and Lee Byrne exchanged scores before halftime but Chris Paterson penalties put Edinburgh ahead early in the second half.

Home hooker Huw Bennett crossed on 60 minutes and Dan Biggar?s conversion and two penalties put the Ospreys in the driving seat.

But Kelly's injury-time score and Phil Godman?s conversion have left Munster with one hand on the trophy.

Meanwhile two tries from replacement Sean O'Brien helped Leinster come from behind to beat Glasgow 36-13.

No.8 Kelly Brown gave Glasgow a shock lead only for Rocky Elsom?s try to get Leinster back on track.

But winger Lome Fa'atau's score on 33 minutes put Glasgow back in the driving seat.

Yet the Scots were hit by a two tries in the space of four minutes in the second half firstly through Shane Horgan on 58 minutes.

And moments later great work by Girvan Dempsey and Brian O'Driscoll created another try for replacement flanker O'Brien.

Another replacement Jonny Sexton got the bonus point try before O'Brien got his second late on as Leinster were given the perfect boost ahead of their Heineken clash against Munster.