On the July 25, 2008 episode of SmackDown, Vickie Guerrero reinstated The Undertaker, and scheduled Edge to face him at SummerSlam inside Hell in a Cell, which the Undertaker won. After the match, The Undertaker chokeslammed Edge from the top of a ladder and through the ring canvas. Following this match, Guerrero tried making a peace offering with The Undertaker on SmackDown by apologizing, but The Undertaker told her that he is not the forgiving kind. At Unforgiven, as The Undertaker approached the ring to "take Guerrero's soul" and take her in a casket, Big Show, who appeared at first to aid the Undertaker, betrayed and assaulted him. As a result of this altercation, The Undertaker and Big Show faced each other in a match at No Mercy, where Show won by knockout. At Cyber Sunday, The Undertaker defeated Big Show in a Last Man Standing match after applying the Hell's Gate. At the same time, The Undertaker was engaged in a short feud with Jeff Hardy, who interfered during his match with Vladimir Kozlov. Hardy defeated The Undertaker in an Extreme Rules match the following week on SmackDown due to the interference of Big Show. The Undertaker then went on to defeat Show at Survivor Series in a casket match, to end the feud. At No Way Out, The Undertaker was part of the WWE Championship Elimination Chamber match along with Triple H, Jeff Hardy, Big Show, Vladimir Kozlov and Edge; however, he was unsuccessful at winning the match as he was the runner-up behind Triple H. He then became embroiled in a long time feud with Shawn Michaels over his WrestleMania undefeated streak and the fact that The Undertaker had never defeated Michaels in a singles match previously. The feud culminated in a match at WrestleMania XXV which The Undertaker won. Their match was highly acclaimed by critics and audiences alike and is now considered by many to be one of the greatest WrestleMania matches of all time. On the April 24 episode of SmackDown, after losing a match against Big Show by knockout, Undertaker attacked Show. Following this, Undertaker took another hiatus from the WWE.