The disappointing Rio Games continued for reigning 200-metre backstroke Olympic gold medallist Missy Franklin as the current world-record holder in the event failed to advance to the final.
Franklin, who was seeded 11th after a preliminary swim of two minutes and 9.36 seconds, struggled with her turns and underwater dolphin kick in Thursday night's semi-final as her distance per stroke deteriorated the final 25 metres.
The 21-year-old touched the wall with the third-slowest time of the semi-finals (2:09.74), nearly five seconds slower than her record time of 2:04.06 at the 2012 London Games.
"I felt like David facing Goliath but I didn't have any stones in my pocket," Franklin said
"I'm not going to warm down, and I'm going to eat some Popsicles tonight."
Franklin has failed to impress since her four-gold Olympic performance in London at age 17 and her six golds at the 2013 World Championships. Looking to prove she still belonged on the international stage, Franklin fell flat Monday in finishing last in her semi-final of the 200 freestyle.
She did earn a gold medal after swimming the preliminary heats of the 4x200 freestyle relay Wednesday but was replaced by Maya DiRado in the final.
Katinka Hosszu won Franklin's semi-final with a leading time of 2:06.03 as she seeks a third gold of the 2016 Games.