The 2012–13 Pro12 League was the 12th season of the rugby union competition originally known as the Celtic League, the third with its current 12-team format, and the second with RaboDirect as title sponsor.
Ospreys were the defending champions,... Wikipedia
Dates: Aug 31, 2012 – May 25, 2013
Champions: Leinster (3rd title)
Top point scorer: Ian Madigan (Leinster); (186 points)
Top try scorer: Tim Visser (Edinburgh); (11 tries)