Seven-time Wimbledon champion Serena Williams raced into the third round in devastating style, while sister Venus joined her after a trickier encounter.
Serena, 36, was too powerful for Bulgarian qualifier Viktoriya Tomova in a 6-1 6-4 win as she continues to impress after time off to give birth.
Five-time champion Venus, 38, fought back to beat Romanian qualifier Alexandra Dulgheru 4-6 6-0 6-1.
Serena, seeded 25th, faces Tatjana Maria or Kristina Mladenovic next.
“I’m going in the right direction,” Serena said. “In the other [first-round match] I didn’t move a lot. I’ve been moving a lot better.
“But I’m trying not to put too many expectations on myself.”
Venus, who has reached the third round for the 18th time, plays Kiki Bertens in the third round.
“It is just about winning the match. If you are at your best or not doesn’t matter as long as you win,” ninth seed Venus told BBC Sport.
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