Alan Quinlan: Rob Kearney silences critics with true warrior display in Soldier Field

Rob Kearney walked into Soldier Field last week with his reputation on the line. Memories of what he had achieved in 2009, when in the space of a few months he went from winning the Grand Slam to starting with the British and Irish Lions (with a Leinster Heineken Cup success sandwiched in between) had faded away.