The Czech 17th seed took one hour and 51 minutes to grind out another hard-fought victory to keep her title defence alive.

Krejcikova had powered back from a set down to beat Philippines star Alexandra Eala in the first round on Tuesday.

“Definitely a huge relief,” Krejcikova said. “It was tough, really up and down, so many points turning one way and the other.

“I wasn’t feeling that well but I was fighting for every ball. I’m really happy I won the third set.”

The two-time Grand Slam champion has endured a difficult time since defeating Italy’s Jasmine Paolini in the final last year.

The 29-year-old was out of action until May after suffering a back injury and lost in the second round of the recent French Open.

Krejcikova pulled out of last week’s Eastbourne Open before the quarter-finals with a thigh problem and has played just eight matches this year.

But Krejcikova is relishing being back on the hallowed turf of the All England Club.

“Definitely a very special tournament for me,” she said.

“The last six to eight months were really difficult. I really appreciate this. I’m happy and grateful to be here playing matches and feeling good and healthy.”

The Czech was broken in the fourth game of the first set but responded emphatically.

She won four consecutive games to regain control and served out the set.

Krejcikova wobbled in the second set, dropping serve in the sixth game as Dolehide levelled the match.

But the Czech steadied her nerve in the deciding set and landed the decisive break for a 4-2 lead before serving out the win.