American Michael Phelps remains on course for his 26th Olympic medal after he reached the final of the 200m individual medley at the 2016 Olympics.
Phelps, 31, who has secured three gold medals in Rio, won his semi-final in a time of one minute 55.78 seconds.
American Ryan Lochte, a six-time Olympic gold medallist, also reached the final as did Great Britain's Dan Wallace, but Ieuan Lloyd missed out.
The men's 200m individual medley final takes place at 03:01 BST on 12 August.
Lochte finished second behind Phelps with Wallace fourth and Lloyd sixth in the same semi-final.
Phelps is the most decorated Olympian in history with 21 gold medals, two silver medals and two bronze medals.
He has won the 200m individual medley in the past three Olympic Games and has already collected a gold medal in Rio in the 200m butterfly, as well as helping the United States win two relay golds.
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