Stefan Denifl and Georg Preidler handed four-year bans for blood doping

The two Austrian riders were caught by investigators as part of Operation Aderlass

Austrian riders Stefan Denifl and Georg Preidler have both been handed four-year bans from cycling by the UCI for blood doping.

The two riders were caught in Operation Aderlass, an Austrian Federal Criminal Police Office investigation in to blood doping in endurance skiing.

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Richard Windsor

Follow on Twitter: @richwindy

Richard is digital editor of Cycling Weekly. Joining the team in 2013, Richard became editor of the website in 2014 and coordinates site content and strategy, leading the news team in coverage of the world's biggest races and working with the tech editor to deliver comprehensive buying guides, reviews, and the latest product news.

An occasional racer, Richard spends most of his time preparing for long-distance touring rides these days, or getting out to the Surrey Hills on the weekend on his Specialized Tarmac SL6 (with an obligatory pub stop of course).