She couldn't maintain those lofty heights – but remained a top 50 player – until a dramatic fall over the last 18 months.
The nadir came in June, where she was close to slipping out of the top 200, and found herself grinding through qualifiers, before a recent bounce back.
"I believe that the end of 2018 was a little turning point," said Bouchard. "Now I'm looking forward. I'm really excited to play. I'm really motivated — which is something I have struggled with in the past."
"It's not like I didn't what to play anymore or anything like that, but after having great results and then having not so good results sometimes you are like 'okay, what's going on,' and it's hard to keep going, when you lose, week after week. I went through a phase when it was definitely tough, but I knew it was still what I wanted to do, so I kept pushing through it."
Bouchard admits it was a strange feeling to be playing qualifying on empty outside courts at Majors, like she endured in 2018.
"In 2013 I won matches in grand slams in the main draw straight away," said Bouchard. "So I kinda skipped the whole qualifying phase, because I accelerated through the professional rankings so quickly. Maybe I missed some steps and now it is time to re-do all those steps. But I did them, I did my fair share and now I never want to have to qualify for a slam again…hopefully."
If first impressions count, the world No 87 Bouchard looks on track to continue her revival next year.
She wowed the crowds at Ellerslie races yesterday, where she was a judge of the fashion in the fields competition and spoke confidently as she did the media rounds.
But more importantly, she seems focused.
She played an exhibition in Hawaii last week – beating former world No 1 Garbine Muguruza before losing to Elise Mertens (world No 12) in a three set final. The 24-year-old skipped family Christmas celebrations in Montreal to arrive in Auckland early, for the longest possible preparation time.
"I'm here for work, and I am doing what I want to do," said Bouchard. "I think that shows the mental state I am in. Look, it doesn't guarantee anything, but talk to me in a year and we will see."
"Last year was very tough, very up and down. [But] I got better as the year went on and I ended the year really well. I'm very happy with my new coach [and] we have worked hard in the off season. I had a couple of good practice matches last week so I feel like sooner rather than later I'll get some good results."