Andreescu brought her drop shot back against Kenin after rarely employing it against Pliskova.
With the victory, Andreescu becomes the first Canadian woman to win the final of the Rogers Cup since 1969.
The tennis world will be hoping to see Andreescu and Williams face off again - to see them finish what they started in the too-short Rogers Cup final. Will a Canadian finally win?
"I need time, and it's not going to come back in one week or one tournament".
19-year-old Canadian tennis star, Bianca Andreescu was crowned the victor once Williams admitted she had to stop playing.
"Within my lifetime there hasn't been that many - I'm 34 and there hasn't been many Canadians up there in the top rankings", says recreational tennis player Luke Naka. But the part about needing a boost in Canada is similar. He was on a five-match losing streak - and on a 2-9 run dating back to March - that he snapped in the first round. She only played competitively until she was 25.
"This isn't the way I expected to win or for [Serena] to go off the court, but [Serena] is truly a champion on and off the court", Andreescutold reporters. "It's pretty exciting to have a young, exciting player coming up professionally. And she's a girl, so hopefully it inspires more girls in Canada".
In fact, many will argue Andreescu, a two-time junior doubles champion having won in Melbourne and Paris in 2017, possesses a far more diverse and complex game than the aforementioned Canucks.
During an emotional moment for Williams, Andreescu walked over to her and knelt down and held her hands to comfort Williams as she wept.
Andreescu finally saved on love to take a 6-5 lead when Kenin's return on her serve went wide.
Tennis icon Billie Jean King, famous for pushing for women's equality in the sport, also joined the cheers on social media, saying Andreescu showed "a level of maturity well beyond her years".