Name this trick

Just watched the Summit documentary and was wondering what trick jensen does at 2:27. Any help is greatly appreciated!!

He basically starts in a trapeze, then pops the yoyo up. From there, he slacks the string over his dominant index finger and catches on his nondominant index finger the loop formed by the slack. From there he just catches the yoyo in a double or nothing. You just slow down the video to figure it out. Hope this wasn’t too confusing.