STOCKHOLM -- Olympic champion Lukas Martens of Germany has broken the men's 400-meter freestyle world record at the Swim Open Stockholm. Martens became the first swimmer to break 3 minutes ...

STOCKHOLM — Olympic champion Lukas Martens of Germany has broken the men's 400-meter freestyle record at the Swim Open Stockholm. Martens became the first swimmer to break the 3 minute ...

Olympic champion Lukas Martens of Germany has broken the men’s 400-meter freestyle record at the Swim Open Stockholm STOCKHOLM -- Olympic champion Lukas Martens of Germany has broken the men's ...