Greece's Apostolos Papastamos competes in the Swimming Men's 400m Individual Medley during the LEN European Aquatics Championships, at the Milan Gale Muskatirovic sports centre in Belgrade, on June 17, 2024. (Photo by ANDREJ ISAKOVIC / AFP) (Photo by ANDREJ ISAKOVIC/AFP via Getty Images)

Greece's Apostolos Papastamos competes in the Swimming Men's 400m Individual Medley during the LEN European Aquatics Championships, at the Milan Gale Muskatirovic sports centre in Belgrade, on June 17, 2024. (Photo by ANDREJ ISAKOVIC / AFP) (Photo by ANDREJ ISAKOVIC/AFP via Getty Images)

Greece's Apostolos Papastamos competes in the Swimming Men's 400m Individual Medley during the LEN European Aquatics Championships, at the Milan Gale Muskatirovic sports centre in Belgrade, on June 17, 2024. (Photo by ANDREJ ISAKOVIC / AFP) (Photo by ANDREJ ISAKOVIC/AFP via Getty Images)

Portugal's Camila Rebelo, Hungary's Eszter Szabo Feltothy (C) and Britain's Holly McGill compete in the Swimming Women's 200m Backstroke Semifinal 1 during the LEN European Aquatics Championships, at the Milan Gale Muskatirovic sports centre in Belgrade, on June 17, 2024. (Photo by ANDREJ ISAKOVIC / AFP) (Photo by ANDREJ ISAKOVIC/AFP via Getty Images)

Greece's Apostolos Papastamos celebrates after winning in the Swimming Men's 400m Individual Medley during the LEN European Aquatics Championships, at the Milan Gale Muskatirovic sports centre in Belgrade, on June 17, 2024. (Photo by ANDREJ ISAKOVIC / AFP) (Photo by ANDREJ ISAKOVIC/AFP via Getty Images)

Austria's Lena Grabowski (Top) competes in the Swimming Women's 200m Backstroke Semifinal 1 during the LEN European Aquatics Championships, at the Milan Gale Muskatirovic sports centre in Belgrade, on June 17, 2024. (Photo by ANDREJ ISAKOVIC / AFP) (Photo by ANDREJ ISAKOVIC/AFP via Getty Images)

Greece's Apostolos Papastamos competes in the Swimming Men's 400m Individual Medley during the LEN European Aquatics Championships, at the Milan Gale Muskatirovic sports centre in Belgrade, on June 17, 2024. (Photo by ANDREJ ISAKOVIC / AFP) (Photo by ANDREJ ISAKOVIC/AFP via Getty Images)

Greece's Apostolos Papastamos (R) competes in the Swimming Men's 400m Individual Medley during the LEN European Aquatics Championships, at the Milan Gale Muskatirovic sports centre in Belgrade, on June 17, 2024. (Photo by ANDREJ ISAKOVIC / AFP) (Photo by ANDREJ ISAKOVIC/AFP via Getty Images)