There are few words that can be said about Brian O’Driscoll that haven’t already been spoken. Simply put he will go down as one of the greatest international rugby players in history after he retires following the Six Nations.

He’ll certainly be hoping to go out on a high with Ireland as they look for their first title in years.

To pay tribute to O’Driscoll we want to highlight five defining moments of his career.

5. Omission from last 2013 Lions test. Possibly more than any other player O’Driscoll is known for his play with the Lions. That is why his being dropped by Warren Gatland for the Lions last test against Australia in 2013 is such a shame. O’Driscoll was playing as well as anyone on the team and his experience would surely have been needed to give the Lions a tour victory. Instead, Gatland chose to drop him in favor of more Welsh players.

4. 2009 Six Nations. Ireland needed to beat Wales in their last match of the 2009 Six Nations to ensure they won the title regardless of other results. O’Driscoll made sure that happened as he put in a memorable try.

3. Lions Injury. O’Driscoll went into the 2005 British & Irish Lions tour to New Zealand as captain. Unfortunately it only lasted one match as he was the victim of a dangerous tackle in the first match. The reslting injury ruled him out for the rest of the tournament.

2. The Intercept. His intercept try against Munster in the 2009 Heineken Cup semi-finals was simply brilliant and spurred his team on to the title.

1. Passes to himself. This one moment sums up what you need to know about Brian O’Driscoll.

Curtis Reed is the founder and editor of This Is American Rugby. He can be found on Twitter @ThisIsAmerRugby, on Facebook, and at www.thisisamericanrugby.com