On the July 25 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 was 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 Big Show won by knockout. At Cyber Sunday, The Undertaker defeated Big Show in a Last Man Standing match after choking him out with "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 on the November 7 episode of "SmackDown". Hardy defeated The Undertaker in an Extreme Rules match the following week on "SmackDown" due to interference from Big Show. The Undertaker then went on to defeat Big Show in a casket match at Survivor Series and again in a steel cage match by submission on the December 5 episode of "SmackDown" 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 25 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 Big Show. Following this, Undertaker took another hiatus from the WWE.