He collected six Leinster Senior Football Championship medals coming in 2002,2005 and 2006 and 2007, 2008 and 2009. He finished the 2005 Leinster and All-Ireland Championships with a total of three points compared to the one goal and ten points he scored in the league. He captained the Dublin side in 2003 and 2004. He also won an All Star in 1999 and has been nominated many times, his last nomination coming in 2005 the same year in which he captained Leinster in the Railway Cup. He has started the 2006 Championship well, with a solid performance against Longford and then a far better performance against Laois, a game in which he dominated midfield. He played a 'man of the match' performance against Offaly in the Leinster final and set up Jason Sherlock for the winning goal. Unfortunately, Whelan suffered an eye injury against Westmeath which forced him off and also affected him in the defeat to Mayo. Whelan showed his reckless side with a poor tackle on Mayo's Ronan McGarrity which forced McGarrity off. He was nominated for an all-star for his 2006 performances in Midfield with Dublin.
