article_snippet: Mike Brown was knocked unconscious against Italy on February 14 and was forced to sit out the defeat by Ireland after suffering a setback in the return to play protocols for concussion.
article_snippet: England missed the comfort blanket Mike Brown provides at full-back as their Grand Slam quest ground to a halt in Dublin in a result that has seen Ireland reinstated as title favourites.
article_snippet: Among the combinations that took a step backwards at the Aviva Stadium was the centre partnership of Luther Burrell and Jonathan Joseph, who disappointed after encouraging outings against Wales and Italy.
article_snippet: Joseph excelled against Wales and ItalyItaly, forcing Burrell (centre) to take a back seat, and the inside centre's place in the team was under threat until Brad Barritt was ruled out against Scotland by a sprained ankle.
article_snippet: Brown (15) was knocked unconscious against Italy and didn't feature in England's defeat in Ireland .
article_snippet: Joseph (left) has arguably been England's most impressive player in the tournament . '