Kenny Robertson didn’t see Aljamain Sterling snatch Cody Stamann’s ankle and tap him with the old Suloev Stretch. Nor did he see Zabit Magomedsharipov turn the same trick later at UFC 228, when he extended Brandon Davis’s hamstring like he were human taffy. Robertson, the first man to land the move in a UFC fight, was in bed sleeping at his home in Illinois. A teacher by day at Eureka High School who is in the process of building himself a house, Robertson didn’t hear about those kneebar finishes until the next day.