Canadian star Summer McIntosh continued her dominance Thursday at the world championships, challenging the world record in the women’s 200-meter butterfly while cruising to yet another win as she pursues history in Singapore.

Both swimmers set the second-fastest times ever in their finals but narrowly missed out on breaking world records

McIntosh is aiming to win five gold medals in individual events at the worlds in Singapore, and the first one came Sunday in the 400-meter freestyle on the first of eight days in the pool. Only legendary American Michael Phelps has ever won five individual medals in the worlds. He also did it at the Olympics.