Doping talk rears its head after Russian swimmers win
Ryan Murphy, of United States, swims in the men's 200-meter backstroke final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Jae C. Hong)

Ryan Murphy, of United States, swims in the men's 200-meter backstroke final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Jae C. Hong)

Jul. 29, 2021 10:05 PM EDT
Ryan Murphy, and Bryce Mefford, of the United States, start the men's 200-meter backstroke semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo, Japan. (AP Photo/Morry Gash)

Ryan Murphy, and Bryce Mefford, of the United States, start the men's 200-meter backstroke semifinal at the 2020 Summer Olympics, Thursday, July 29, 2021, in Tokyo, Japan. (AP Photo/Morry Gash)

Jul. 28, 2021 10:23 PM EDT
Evgeny Rylov, of Russian Olympic Committee, swims to win the gold medal for the men's 200-meter backstroke finalat the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Gregory Bull)

Evgeny Rylov, of Russian Olympic Committee, swims to win the gold medal for the men's 200-meter backstroke finalat the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Gregory Bull)

Jul. 29, 2021 11:43 PM EDT
Evgeny Rylov, of Russian Olympic Committee, white cap, dives off the starting block to swim in the men's 200-meter backstroke final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/David Goldman)

Evgeny Rylov, of Russian Olympic Committee, white cap, dives off the starting block to swim in the men's 200-meter backstroke final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/David Goldman)

Jul. 29, 2021 11:54 PM EDT
The United States' Ryan Murphy, right, gives a thumbs up to Evgeny Rylov, of Russian Olympic Committee, after Rylov won the men's 200-meter backstroke final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/David Goldman)

The United States' Ryan Murphy, right, gives a thumbs up to Evgeny Rylov, of Russian Olympic Committee, after Rylov won the men's 200-meter backstroke final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/David Goldman)

Jul. 30, 2021 12:02 AM EDT
Evgeny Rylov, of the Russian Olympic Committee, swims to victory in the men's 200m backstroke final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Jeff Roberson)

Evgeny Rylov, of the Russian Olympic Committee, swims to victory in the men's 200m backstroke final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Jeff Roberson)

Jul. 29, 2021 10:10 PM EDT
From left, Ryan Murphy, of United States, Evgeny Rylov, of Russian Olympic Committee, and Luke Greenbank, of Britain, pose with their medals after the men's 200-meter backstroke final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Gregory Bull)

From left, Ryan Murphy, of United States, Evgeny Rylov, of Russian Olympic Committee, and Luke Greenbank, of Britain, pose with their medals after the men's 200-meter backstroke final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Gregory Bull)

Jul. 29, 2021 10:50 PM EDT
Evgeny Rylov, of Russian Olympic Committee, competes in the men's 200-meter backstroke final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Jae C. Hong)

Evgeny Rylov, of Russian Olympic Committee, competes in the men's 200-meter backstroke final at the 2020 Summer Olympics, Friday, July 30, 2021, in Tokyo, Japan. (AP Photo/Jae C. Hong)

Jul. 30, 2021 12:09 AM EDT