Ironman World Championship: Frodeno, Ryf take aim at history

Sebastian Kienle talks at the professional press conference for the 2017 Ironman World Championship on Thursday. Also pictured is Jan Frodeno (right). (Rick Winters/West Hawaii Today)
Jan Frodeno talks at the professional press conference for the 2017 Ironman World Championship on Thursday. Also pictured is Sebastian Kienle (left). (Rick Winters/West Hawaii Today)
Daniela Ryf talks at the professional press conference for the 2017 Ironman World Championship on Thursday. (Rick Winters/West Hawaii Today)
Heather Jackson talks at the professional press conference for the 2017 Ironman World Championship on Thursday. (Rick Winters/West Hawaii Today)
Lional Sanders talks at the professional press conference for the 2017 Ironman World Championship on Thursday. (Rick Winters/West Hawaii Today)

KAILUA-KONA — In a pre-race face off, Ironman World Championship top contenders Sebastian Kienle and Jan Frodeno stared each other down and flexed their muscles.