Newcastle’s Dean Richards fumes at yellow-card rulings but also his defence

• London Irish 22-21 Newcastle• London Irish earn fillip in buildup to European Challenge Cup quarter-final• Chris Noakes seals victoryLondon Welsh’s demise has allowed these clubs to escape the shadow of relegation this season but, on this evidence, it is Newcastle, 20 years after they became the first English club to turn professional, who face a struggle for survival next winter.Dean Richards, Newcastle’s director of rugby, had a king-sized rant after the match at the decision by the referee, Greg Garner, to show yellow cards five minutes before the end to his lock Josh Furno and the London…