Topic summary
WrestleMania XXV

Extracted from the Wikipedia article WrestleMania 25.
SmackDown
After the events of WrestleMania, both Shawn Michaels and The Undertaker took a four-month hiatus from WWE. Michaels came back to reform D-Generation X (DX) with Triple H so that they came face to face with The Legacy at SummerSlam. The Undertaker also returned at SummerSlam and attacked the then-World Heavyweight Champion, CM Punk. At the Slammy Awards, The Undertaker and Shawn Michaels won the Best Match of the Year, with Michaels expressing that he was glad that he had created history at WrestleMania, but just when he was about to leave, he challenged the Undertaker to a rematch at the next WrestleMania. The Undertaker later denied the challenge, saying he had nothing more to prove to Michaels, and told Michaels that he would have to earn the spot. Michaels later entered the 2010 Royal Rumble, but would be eliminated by Batista. He later tried to enter the Elimination Chamber match for the WWE Championship, but he was defeated by Randy Orton to earn the spot. Then at the Elimination Chamber pay-per-view, Michaels cost The Undertaker his World Heavyweight Championship. The next night on Raw, The Undertaker accepted the rematch, but only on the condition that Michaels would retire from WWE if he lost. At WrestleMania XXVI, The Undertaker defeated Michaels in a Streak vs. Career Match, thus ending Michaels' career. The next night on Raw, Michaels said farewell to WWE, with his best friend and DX member Triple H right next to him as they spent their last time, together before Michaels finally left the building.