This was a rematch of this year's thrilling French Open quarterfinal in which Sharapova was down a set and 5-4 and not only went on to win the match, but the tournament too.
Sharapova took the court on Wednesday for the first time since her fourth round loss to Angelique Kerber at Wimbledon. She also was competing in the Rogers Cup for the first time since 2011 and in Montréal for the first time since 2008.
The Turning Point
This encounter was similar to their last one, with Muguruza getting the early momentum before Sharapova turned it around.
In this case, Muguruza was up a set and a break at 6-4, 2-1 when Sharapova came storming back by winning five of six games to force a third set. She maintained her stranglehold on the match there, going on to a 4-6, 6-3, 6-1 victory.
By The Numbers
Sharapova was six of nine on break points for the match compared to three of 11 for her opponent, but more importantly she was a perfect five of five in the second and third sets. Sharapova also surrendered just four points on her first serve all day.
"It's been a few weeks since I've been in a competitive atmosphere," Sharapova said. "It's always quite different than practice no matter how much you train. Once you step on the court, you feel the energy from the crowd and you get inspired by everything, but you're ultimately a bit rusty. I'm just happy that I got through that and won today because I had a very tough opponent."
Sharapova plays 14th-seeded Carla Suárez Navarro, who was a 6-1, 3-6, 6-3 winner over lucky loser Sílvia Soler-Espinosa. Sharapova was victorious in her one previous meeting with the Spaniard.
"She's a different type of opponent than I played today," Sharapova said. "She has a little bit more variety, a one-handed backhand, uses her slice extremely well, and also moves around the court quite well. I expect a physical match from her. You never quite know what you're going to get, especially when you haven't faced an opponent in a while. I'm looking forward to it."