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.

Summer McIntosh came within a whisker of breaking a long-standing world record, and Leon Marchand failed to improve on a new mark he set just a night earlier, but both young guns won gold medals at the world championships in Singapore on Thursday.

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.