Breaking your neck or dying? THis page
shows pages related to deaths while taking part in sport. Rugby isn't even mentioned. I myself know no rugby player who has died while playing though I don't doubt there is one. Though I could name a couple of footballers and racing drivers and indeed boxers and cyclists.
Not to be unfair though, I did some research. Your 3 times more likely to be injured playing rugby than almost any other sport.
This table is interesting. It lists categories for Insurance companies. The highest being the most expensive.... intrigingly, football is in Category 2 with Rugby.
Category 6: Bungee jumping, mountaineering (over 4,500 metres), powerboat racing, expeditions, overland trips in Africa, Asia or South America, and any professional sport.
Category 5: Hang gliding, parachuting (other than BASE jumping), paragliding, pot holing, rock climbing, mountaineering (up to 4,500 metres), off-piste skiing, ski racing or jumping, heli-skiing and ice hockey.
Category 4: Scuba diving (over 30 metres), wintersports including snowboarding, piloting aircraft.
Category 3: Scuba diving (to a max 30 metres), hot air ballooning, micro- lighting, skateboarding, white water rafting/canoeing and trekking (not in Africa, Asia or South America).
Category 2: Amateur contact sport e.g. hunting, fencing, boxing, martial arts, polo, rugby, soccer
, mountain biking, parascending, high diving and jet skiing.
Category 1: Non-contact sports e.g. abseiling, motorcycle touring, yachting (inside territorial waters), tour operators' safaris (not using guns), and trekking (not remote or mountainous areas).
Also, It's found that Angling is the most dangerous in terms of death. Followed by horse racing and eventing, climbing and motor racing.
If your talking about injuries, then rugby yes, but deaths, no, several sports are more dangerous in that respect.