Sports

Lakeville teen Regan Smith sets world record in women's 200 back

The 17-year-old won her semifinal heat in 2 minutes, 3.35 seconds.

Regan Smith celebrates as she sets a new world record.
Regan Smith celebrates as she sets a new world record of 2:03.35 after competing in the women's 200-meter backstroke semifinal during the world swimming championships Friday in Gwangju, South Korea.
Quinn Rooney | Getty Images