June 30, 2009 (ECW)
The formerly unknown wrestler first appeared on ECW.
Before beginning his match he grabbed the mic and spoke a few words in a rare language, introducing himself as Sheamus—a monstrous redhead from Ireland that had "come to take ECW as his own."
He went on that night to destroy a local competitor. His cocky attitude made him a heel in the eyes of the fans.
In the following months he continued making appearances on the show, defeating local competitors and well-known wrestlers like Goldust and Shelton Benjamin, thus earning some reputation and hype.
Oct. 26, 2009 (RAW)
Sheamus appeared on RAW for the first time as a relative unknown to the RAW fans who had not watched his work on ECW. He again introduced himself by grabbing the mic and stating that this was his first night on RAW and he was there to make an impression. He then destroyed Jamie Noble.
He once again established himself as a villain, "retiring" Jamie Noble after a squash and attacking Jerry Lawler.
Nov. 22, 2009 (Survivor Series PPV)
In his first pay-per-view, the Irishman took part in a traditional "five-on-five-elimination tag team match," as part of The Miz's team along with Drew McIntyre, Jack Swagger, and Dolph Ziggler. They faced John Morrison's team of Shelton Benjamin, Finlay, Evan Bourne, and Matt Hardy.
In the match he eliminated Finlay with his Bicycle Kick and Powerbombed John Morrison for the final pin and victory for his team.
Nov. 23, 2009 (RAW)
RAW Guest Host Jesse Ventura announced an "Eight-Man Breakthrough Battle Royale," where the winner (supposed to be a wrestler who had never won a championship before) would become the No. 1 contender for John Cena's WWE Championship.
The event consisted of Sheamus, Kofi Kingston, Randy Orton (who cheated to earn a spot), R-Truth, Mark Henry, Cody Rhodes, Ted DiBiase, and MVP.
Sheamus used an intelligent strategy, keeping himself out of the fight while quickly attacking other competitors and eliminating them. In that fashion he eliminated R-Truth, MVP, Mark Henry, and Kofi Kingston, earning a shot at the title.
Later on, he attacked John Cena during the contract signing and put him through a table, leading Ventura to declare the Championship match at TLC would be a "Tables Match."
Dec. 13, 2009 (Tables, Ladders, and Chairs PPV)
Sheamus became the first Irish-born WWE Champion after slamming John Cena through a table. He stunned many in the audience in what constituted a great upset for many and a nice surprise for others.
In the following weeks, he continued to gain heat from the audience and easily defeated wrestlers such as Evan Bourne and MVP.
Jan. 31, 2010 (Royal Rumble PPV)
Sheamus defended his title against Randy Orton. The match ended in a DQ after the intervention of Cody Rhodes.
Sheamus then kept his unpinned streak going since a loss to Goldust on ECW by defeating Christian in dominating fashion in a good match on RAW.
Feb. 21, 2010 (Elimination Chamber PPV)
The Irishman lost the WWE Championship after being pinned for the first time on a PPV by Triple H.
This title loss to Triple H led Sheamus to attack him two weeks later on RAW.
March 8, 2010 (RAW)
Sheamus challenged Triple H to a match at Wrestlemania XXVI, which Triple H accepted.
March 22, 2010 (RAW)
Sheamus pinned Randy Orton after hitting him with the Bicycle Kick while Orton was performing a DDT on Cody Rhodes during a three-on-two handicap match featuring Sheamus and The Legacy vs. Triple H and Randy Orton.
March 28, 2010 (Wrestlemania XXVI)?
While there have been many rumours and predictions about what will happen in his match against Triple H, something is very clear: Sheamus still has to convince many WWE fans that he is a true superstar.
Therefore, it's necessary for him to make a good impression and defeat Triple H in a clean victory. The WWE needs "new blood" in order to keep succeeding. Although hated by many, The Irishman is, in my opinion, really close to achieving main-eventer status.
Will he make it? May the WWE chairman and writers say the last word.