I would not play at that price.
there are many many examples of Olympic strange stuff
(Look at Iraq soccer for example). Emotions and judges, refs, crowds, injuries, bad bounces, poor shooting, illness,
Dont lay that much cash on a semifinal and final games that could easily be a 5 point games and down to the wire.
I did the most stupid thing earlier I played the sure thing, sure lock S Korean womens archery team at -800 to win the gold (and for a bunch). They closed at -2200 but still they almost lost the sure thing by a single point to China a team they were TONS better than. I cashed but almost hurt a huge fraction of my bankroll at one sportsbook. Figured sure thing only gone for a few days and I get it back plus a bonus! anything can happen and high juice is not the way to get rich that is for sure.
but if you do find the best price (as you have that looks like the Pinnacle line) and play it small just an "I told you this was a lock" type of play.