However, many of the changes are subtle and do not follow the attempts to gain a distinct home advantage against the Americans made by his predecessors Ian Woosnman at the K Club in Ireland in 2006 and Sam Torrance at the Belfry in 2002.
The alterations, unveiled to the European golfing media on Monday, have been implemented despite the fact that the Celtic Manor course was built and opened for play for $8 million only in 2008.
Montgomerie has had many of the course bunkers deepened, had the rough made consistently thicker than it’s been for the Wales Open on the European Tour in 2008 and 2009, and has insisted the greens be firmer and less receptive to spin.
“All along, Colin has insisted that he was not interested in gaining a home advantage,” said Jim Mckenzie, Celtic Manor’s director of golf courses.
“If Europe does regain the Ryder Cup he wants it to be because they have played the better golf and not because the course has been tricked up.
“And in all my dealings with Colin since he was appointed Europe’s Ryder Cup captain I have to say he has not been over demanding.”
The European Tour’s top players will get their first taste of Montgomerie’s changes when Celtic Manor stages the Wales Open again on June 3-6.
As yet however, United States captain Corey Pavin has not revealed whether any of his potential team members will be competing in the $2.2-million event.
But McKenzie insists the changes made will make for a better Ryder Cup.
“We have deepened a number of bunkers with larger faces,” he said.
“And the rough will certainly be consistently thicker than it has been in recent years, though only about 3 and a half to four inches in length.
“The greens will also be a lot firm, which is something we have been working towards since the course opened in 2007, and which has always been a high priority for Colin.
“It means that only properly struck irons will be rewarded by stopping quickly on the greens.”