Rosie MacLennan is the first Canadian summer athlete to successfully defend an individual Olympic gold medal.

Canada's Rosie MacLennan during her gold medal performance in trampoline at the 2016 Olympic games in Rio. (Ruben Sprich/Reuters)

Rosie MacLennan during her gold medal performance in trampoline. (John Lehmann/The Globe and Mail)

Canada's Rosie MacLennan performs during the women's trampoline final at the 2016 Summer Olympics in Rio de Janeiro. (Dmitri Lovetsky/AP Photo)

Rosie MacLennan during her gold medal performance in Rio. (John Lehmann/The Globe and Mail)

Canada's Rosie MacLennan performs during the women's trampoline qualification at the 2016 Summer Olympics in Rio. (Julio Cortez/AP Photo)

Judges watch as Rosie MacLennan competes in women's trampoline in Rio. (Ruben Sprich/Reuters)

Canada's Rosie MacLennan during her gold medal performance in trampoline at the 2016 Olympic games in Rio. (Mike Blake/Reuters)

Rosie MacLennan during her gold medal performance in trampoline. (John Lehmann/The Globe and Mail)

Rosie MacLennan after finishing her gold medal performance in trampoline. (John Lehmann/The Globe and Mail)

Rosie MacLennan celebrates after her gold medal win in trampoline at the 2016 Olympic games in Rio. (John Lehmann/The Globe and Mail)

Rosie MacLennan celebrates her gold medal win in trampoline at the 2016 Olympic games in Rio. (John Lehmann/The Globe and Mail)

Canada's Rosie MacLennan kisses her gold medal after winning the women's trampoline final. (Mike Blake/Reuters)