Penney for his part chose to identify a period in the opening half as being crucial rather than those late in the game that gave Racing the lead and ultimate victory.

"Way back at the start, early on we were in control. And we lost one over the line. And then we got a scrum penalty for some reason and they got into our half. Then we tried to spin a bit of mucky ball. They latched onto it. Toed it through. So that was a fourteen points turnaround at that stage. Got their tails up a little bit."

The ball that was 'lost over the line' initially was adjudged a try by referee Greg Garner who then went upstairs on the advice of his assistant on that side.

And if O'Connell could have been deemed unlucky then minutes later scrum-half Maxime Machenaud was as lucky as the proverbial cut cat to be awarded a try after he clearly had no control on the ball he flopped on over the Munster line, that incident coming as Penney said Munster had tried to move the ball in awful conditions and on a pitch that was barely fit for purpose following the soccer game the previous night and incessant rain after.

They started brightly in horrible conditions and showed commendable control of the bar-of -soap ball. The Munster scrum pummeling their opposition, Dave Kilcoyne mincing his opposite international number.

Ronan O'Gara kicked them in front after 8 minutes before a behind his back take by Peter O'Mahony sparked the first try. O'Mahony made inroads before passing to Sean Dougal who bounced Machehenaud's tackle to score under the posts.

Thirteen ten down at half time and then the gap out to six after Olly Barkley had kicked another penalty in the 51st minute, it looked like there was no way back really as Racing gave flight to the ball at every opportunity to force Munster to attack from deep.

But attack they did and Ian Keatley, into the number 10 berth when Ronan O'Gara was forced off (hamstring) after just 33 minutes, had an opportunity to narrow the lead with a 62nd minute penalty that he missed but made amends with a superb conversion after Simon Zebo's fine solo try put Munster a point ahead.

Then from the restart Conor Murray attempted to run ball out of defence, got nabbed and isolated to concede the penalty that Barkley belted over for a 19-17 lead.

Any chance of a last gasp effort ended when from the restart Munster were again penalised, very dubiously - " from the kick-off they looked to have lost the ball forward and one of their players was in an offside position to gather it and none of the officials picked that up." was Penney's view - and Mirco Bergamasco kicked the penalty with almost the last action of the game.

Munster Rugby: Ian Keatley; Doug Howlett (c), Casey Laulala, James Downey, Simon Zebo; Ronan O'Gara, Conor Murray; Dave Kilcoyne, Damien Varley, BJ Botha, Billy Holland, Paul O'Connell; Donnacha Ryan, Sean Dougall, Peter O'Mahony. Replacements: Mike Sherry, Marcus Horan, Stephen Archer, David O'Callaghan, Paddy Butler, Peter Stringer, Danny Barnes, Denis Hurley.

Racing Metro 92: Benjamin Fall; Julien Jane, Mirco Bergamasco, Juan Martin Hernandez, Julien Saubade; Olly Barkley, Maxime Machenaud; Andrea Lo Cicero, Dimitri Szarzewski, Luc Ducalcon; Karim Ghezal, Francois Carl Van der Merwe; Antoine Battut, Jacques Cronje (c), Sakiusa Matadigo. Replacements: Thomas Bianchin, Eddy Ben Arous, Fabrice Metz, Bernard Le Roux, Camille Gerondeau, Sebastien Descons, Virimi Vakatawa, Benjamin Salemane Sa.