* Some events can be held in other cities, countries
* IOC scraps cap on 28 sports for Summer Games
* Limit now 10,500 athletes and 310 events (Writes through with detail, quotes and reaction)
By Ossian Shine
MONACO, Dec 8 (Reuters) - Radical changes to how cities will bid to host Olympic Games, and rules allowing more sports to feature, were ushered in on Monday as International Olympic Committee members took bold steps to revamp their movement.
Sweeping alterations to the bidding process were unanimously approved, making it easier and cheaper for host city hopefuls.
IOC members also scrapped a cap on 28 sports for a Summer Olympics, agreeing instead to limit the Games to 10,500 athletes and 310 events.
The move is not good news for all athletes, though. Sports such as baseball, softball, squash or karate can only be added if room is made by another sport which enjoys multiple events.
The votes kick-started a Monaco meeting of more than 100 IOC members which promises to drive change and innovation among the kingpins of global sport.
IOC president Thomas Bach passed his first test with flying colours, all his moves to revamp the Olympic movement receiving overwhelming support.
The changes to the bidding process include allowing hosts to stage some Olympic events in other cities, and even countries.
"The compactness of the Games has to be weighed up against the benefit of using existing venues," Australian John Coates told his fellow members at Monaco's Grimaldi Forum.
"These changes do contemplate different cities and countries hosting the Games, and this is for reasons of sustainability," added Coates, who led a working group looking at the bid process.
Eager to avoid a repeat of the 2022 Winter Games campaign in which four of six candidates dropped out in mid-race over financial concerns, denting the Games' reputation as a lucrative project, the IOC voted unanimously to adopt the recommendations.
The changes are aimed at reducing the cost of bidding and allow candidates to integrate the Olympics into their city plans rather than the other way round.
Changes also include an invitation phase where potential candidates can first discuss plans with the IOC before deciding whether to launch a campaign to stage the Games.
This will avoid a situation like the 2022 bidding debacle.
Cities have spent close to $100 million on campaigns aimed at wooing IOC members to give them the honour of staging the Summer Olympics.
Regarding the makeup of the sports programme, any evaluation would be done in collaboration with the sports' international federations, the IOC said.
It will decide on the events for an Olympics not later than three years prior to the opening of the Games.
Members can now brace themselves for a period of intense lobbying ahead of the 2020 Tokyo Games, with baseball and softball in particular seeking a spot on the programme.
Canadian IOC member Dick Pound already knows which events he reckons the Games could do without to pave the way for new ones.
"Synchronised swimming... and maybe triple jump," he told Reuters. "Everybody has to share the load for the good of the Olympics."
Double Olympic gold medallist Sebastian Coe, who recently launched his campaign to become president of world athletics' governing body, the IAAF, was quick to respond.
"I'll let Dick make observations about his own sport and I will make them about mine, and triple jump is a sacrosanct sport in track and field," Coe told reporters in Monaco.
Julio Maglione, president of the world swimming federation, FINA, said: "I don't know what will happen, this is the truth, it's a difficult moment.
"I suppose that it's a problem we discuss in the future, we don't know what's going to happen with us, athletics, gymnastics." (Additional reporting by Karolos Grohmann in Monaco; Editing by Ken Ferris)