Bianca Andreescu's top priority is now avoiding injuries, according to her coach Sylvain Bruneau, who says that as long as she's fit she can compete with any player on tour.
The 19-year-old Canadian won her hometown event at the Rogers Cup in Toronto, her second victory of the season following a surprise triumph as a qualifier at Indian Wells. She had played just two events in between, retiring in Miami with shoulder problems and withdrawing in the second round of the French Open with the same injury.
Even though it's Andreescu's second big title, Bruneau says he also found it surprising.
"It does," he told TENNIS.com, noting her long layoff. "It does, I must say, because what happened with her injuries, very little tennis, that she comes here and wins the whole thing, it's pretty amazing."
But Bruneau soon saw that Andreescu's tennis was still intact.
"On the first day, to be honest. I was surprised with the level she played," he said. "Just to be at the tournament was a win for us."
That opening win was against fellow Canadian Genie Bouchard, followed by defeats of Daria Kasatkina, Kiki Bertens, Karolina Pliskova and Sofia Kenin before the final against Williams.
That was even though Andreescu did not decide to play until the week before the tournament, and withdrew from the WTA event in Washington, D.C. prior to Toronto.
Unlike the French Open, she wanted to be fully healed before returning.
"Lesson learned, we needed to take care of her body and make she was ready and not get another injury going," said Bruneau.
That's something they will keep concentrating on, with Andreescu having also experienced back problems in 2018 before her more recent shoulder tear.
"It's the priority," Bruneau said. "Because we had a taste of being away from the courts. She's had a lot of setbacks, and we want to be very careful now."
The teenager began the season ranked below the top 150, but now stands Top 20 in the rankings with a game that accompanies power off the ground with spin, variety and angles.
But her coach also identifies room to improve her game.
"We're going to keep working on her serving, and I think there's things she can still get better at. I want her into the net a little bit more," he said. "And strategy... she has a lot of tools inside her toolbox, so when to use them and when not to.
"And she's a great athlete, but physically she can get stronger."
Her current game has still brought her plenty of success—Andreescu's 38-4 record this season gives her the highest winning percentage on tour, and also includes a final in Auckland as a qualifier and a title at the smaller event at Newport Beach.
Andreescu will be "among" the favorites at the US Open, her coach assesses. He expects she can compete with any of her potential opponents, saying, "No. I'm not saying she's beating everybody, but I think she has her chance against everybody."