A look back at Day 4 at the All England Club in photos, links, tweets and more.
Photo of the Day
Serena Williams prepares to serve during her second-round match with Simona Halep (from SI.com's Best Shots from Day 4 at Wimbledon).
Don't miss Nick Bollettieri's open letter to Venus and Serena that ran in Thursday's Independent ... American vet Alex Bogomolov Jr. hurled a racket so hard it rebounded all the way off the court ... Exhibit A in why the scrutiny circling Andy Murray at Wimbledon is second to none ... Here's Murray's latest column for BBC Sport ... How the changing faces of the guests in the Royal Box reflects the rise of Britain's "new establishment" ... The London subway strikes have been canceled, averting Wimbledon traffic woes ... How the fusion of tennis and fashion is turning the courts into a catwalk ... A detailed analysis of the loudest grunters in women's tennis ... Yes, it's true: the Wimbledon roof slows balls down ... Tennis rallies look awesome when they're made of racket string.
The Tweet Beat
"What a match!!! Won 8:6 in the third set...! I can't find words to describe how happy I am!"
-- Germany's Sabine Lisicki, after upsetting third-seeded Li Na on Centre Court, 6:49 p.m. ET
"I don't eat meat. @Venuseswilliams does. She got ravioli. I sampled it. I loved it. Finished it. Turns out it was deer meat. I die I die"
--Serena Williams, sharing a nightmarish dinner experience, 5:32 p.m. ET
"Overlooking the courts plank. Thank you and goodnight. http://lockerz.com/s/113444522"
"Amazingly enough we had a lines person fall asleep during the match..she missed a call and was non-responsive for 30 secs until she woke up"
--American Rajeev Ram, outing a sleep-deprived Wimbledon official after a first-round victory in the men's doubles, 3:59 p.m. ET
124 ... Speed in m.p.h. of Sabine Lisicki's fastest serve in Thursday's upset of Li Na, the quickest serve on the women's tour in 2011.
218 ... WTA ranking of the 21-year-old Lisicki in March before winning at Birmingham and earning a wild card to Wimbledon.
87 ... Ranking of Lleyton Hewitt (out of 100 prominent Australians) in a Reader's Digest opinion poll on trustworthiness.
Frustrated with the worsening visibility after losing the first set against Olivier Rochus on Wednesday, Argentina's Juan Martin del Potro -- channeling equal parts John McEnroe and Richie Tenenbaum -- threw both of his shoes into the crowd. (Delpo came back to win the second-round match when it resumed Thursday afternoon.)
They Said It
"It's my best friend now in London, the little squirrel -- she's getting closer and closer each day. I'm trying to feed her from my hand. Maybe one day."