LONDON — Serena Williams sounded far less surprised than pretty much anyone else that her 34-match winning streak ended.

At Wimbledon, where she was seeded No. 1 and is a five-time champion.

Despite leading 3-0 and 4-2 in the final set.

In the fourth round.

Against someone seeded 23rd.

“Come on, guys, let’s get with it. She’s excellent,” Williams said. “She’s not a pushover.”

That clearly is true about Sabine Lisicki. Still, it was surprising to see Williams lose after going unbeaten — and generally looking unbeatable — for 4½ months, until slumping down the stretch and bowing out 6-2, 1-6, 6-4 Monday against Lisicki by dropping the last four games.

“I felt,” said Williams, the defending champion, “that I was on the verge of winning.”

But her collapse, and the demise of the longest winning streak in women’s tennis since 2000, fit right in at this unpredictable Wimbledon, where up is down, where seedings and pedigree mean nothing whatsoever.

“Didn’t play the big points good enough,” Williams said. “I didn’t do what I do best.”

Instead, Williams was passive in crunch time and essentially let Lisicki do what she does best: dictate points quickly with big serves, powerful returns and pinpoint groundstrokes. If that sounds familiar, could be because it’s the formula Williams uses to dominate her sport. Except on this breezy afternoon, Lisicki compiled a 10-7 edge in aces, a 35-25 lead in winners, and broke Williams five times.