Maria Sharapova showed her grit in a narrow escape Wednesday. (Source: Reuters)

Maria Sharapova’s boyfriend described the five-time major winner as a great fighter, which he meant as a compliment.

One of tennis’ power couples, Sharapova and No. 10 Grigor Dimitrov are discreet about their relationship but the up-and-coming Bulgarian star offered an opinion on what makes her such a tough player.

“You can’t name one thing in particular with her,” said Dimitrov, a Wimbledon semifinalist. “I think she’s been fighting throughout all those years, through everything that is in her way, jumped all the hurdles and all the obstacles.”

“By far the greatest fighter ever,” he said.

Sharapova showed her grit in a narrow escape Wednesday, saving two match points before beating Alexandra Panova in their second-round match.

“Days like that define who you are,” said Dimitrov, who also advanced to the third round Wednesday.