Ulster prop Declan Fitzpatrick is tackled by Zebre's Mauro Bergamasco during the Pro12 game at RavenhillRobbie Diack touches down for one of the two tries he scored against the ItaliansUlster wing Andrew Trimble attempts to escape the attention of Paolo Buso and Sinoti SinotiUlster centre Luke Marshall is helped from the pitch by Ulster medical staffUlster flanker Iain Henderson in action against Filippo Cristiano as Ulster beat Zebre 26-3Ulster try-scorer Ricky Andrew is confronted by Michael van Vuren and Luca RedolfiniUlster winger Chris Cochrane makes ground for Pro12 leaders Ulster against ZebreUlster forward Mike McComish is tackled by Gonzalo Garcia during Ulster's bonus-point victory