PHOTOS | See Penny Oleksiak's road to Olympic history

Oleksiak now stands alone in Canadian Olympic history.

The look on Penny Oleksiak'sface the moment she realizes she has won an Olympic medal is a look that has already become an icon of these Games for Canadians.

• Oleksiak wins historic 4th medal and its gold

The 16-year-old Toronto swimmer made historyThursday nightbyswimming to a gold medal-winning tie with American Simone Manuel the first blackwoman to medal in an individual swimming event in the 100-metre freestyle. It's Canada's first first place finish at the Rio Olympics.

Sheisthe only Canadian to win four medals in one SummerGames.

Sarah Sjostrom of Sweden won the bronze medal on Thursday.

Oleksiak has earned a reputation as a closer.

In a moment of anticipation sure to conjure feelings of dj vu from earlier in the Games, teammates Taylor Ruck, Brittany MacLean and Katerine Savard cheer on their anchor swimmer poolside on Wednesday. Oleksiak anchored the 4x200-metre freestyle relay team to a bronze medal.

On Sunday, she won a silver medal in the butterfly.

There's that look of joyous shock again. On Sunday nightOleksiak powered to a silver medal in the 100-metre butterfly final in Rio, a day after she anchored the bronze medal-winning 4x100m freestyle relay team.

Here's that trademark Oleksiak look again.

She anchored the 4x100m relay team, too.

Here's 4x100-metreteammatesSandrine Mainville,Chantal Van Landeghem and Taylor Ruckcelebrating their bronze medal on Aug.6. Oleksiak, who swam last, was still in the pool.

The team hugged it out on the pool deck after the race.