WWE Superstar Jacob Fatu was brutally assaulted by a mystery attacker on last week's episode of SmackDown. The Samoan Werewolf was set to face Drew McIntyre in a No. 1 Contender's Match for Cody Rhodes' Undisputed WWE Championship. However, before he could go into the match, he was seen lying backstage with blood oozing from his mouth.And as of now, all signs point towards Drew McIntyre being that attacker. Although the 6-foot-5-inch superstar has denied any involvement, there are significant hints that he is indeed the assailant.In this listicle, we shall discuss three signs that Drew McIntyre was behind the attack on Jacob Fatu.#3. Drew McIntyre was lurking backstageDrew McIntyre was spotted loitering backstage, right before his match with Jacob Fatu. In fact, during a segment between Cody Rhodes and Jacob, the Scottish Warrior was seen watching the two from a distance.McIntyre, out of desperation, could have gone after Jacob Fatu to secure his spot against Cody Rhodes. Moreover, he was engaged in a rivalry with Fatu for the past few weeks, and the two had even clashed on numerous occasions. Therefore, it's reasonable to assume that Drew McIntyre could have attacked Jacob to rob him of a title shot against Rhodes.#2. Drew McIntyre ambushed Jacob Fatu a few weeks ago on WWE SmackDownDrew McIntyre had similarly attacked Jacob Fatu on the October 10 edition of SmackDown. He came at him from behind and took out the former United States Champion with blows and kicks.General Manager Nick Aldis had then come to the rescue of Fatu along with some security officials. This is another sign that suggests Drew McIntyre is behind the attack on Fatu. He seemingly wanted to keep Fatu out of the title picture for a long time and took him out secretly backstage.#1. Drew McIntyre is desperate to become Undisputed WWE ChampionDrew McIntyre also appears desperate to win the Undisputed WWE Championship. It's been nearly five years since he won the coveted title. His victory as World Heavyweight Champion at WrestleMania 40 lasted for about five minutes as Damian Priest cashed in his Money in the Bank contract to dethrone him.And now, McIntyre wants to remove Cody Rhodes as the Undisputed WWE Champion by any means. It wouldn't be wrong to say that McIntyre is also the top heel on SmackDown.All the top superstars like Roman Reigns, CM Punk, Seth Rollins, and AJ Styles are on WWE Monday Night RAW. SmackDown currently has only Drew McIntyre and Randy Orton as Cody Rhodes' top opponents. While Randy hasn't yet challenged his long-time friend for the title, McIntyre has done so.The Scottish Psychopath will now face Cody for the Undisputed Championship at Saturday Night's Main Event (SNME) on November 1, 2025, in Salt Lake City, Utah. It will be interesting to see if he can overcome the company's top babyface to become a world champion again.