Jeffrey Tan is a Rope Access Technician who only competed in American Ninja Warrior 5. At the time, he breezed through the Rokudantobi, Downhill Jump, Prism Tilt, Hazard Swing, Circle Cross, and Soritatsu Kabe twice, and the Salmon Ladder, Rumbling Dice, Body Prop, and Spider Climb only once in Baltimore. In Las Vegas, he cleared the Timbers (Nonuplet Step), but almost failed the Giant Cycle, and cleared the Rope Glider, and after completing the Spider Climb in Baltimore, he failed the Jumping Spider.
He competed again in American Ninja Warrior 6 in St. Louis. He made it past the Steps, but went out on the Rolling Log near the end. In American Ninja Warrior 7, he competed in Pittsburgh, where he failed the Devil Steps, when he lost his grip in the middle of the obstacle.