Isaacson: These two played only once before on grass, in the London Games, with Kvitova coming out ahead in a three-setter. Kvitova had a good tune-up in a well-played three-setter against Venus Williams in the last round and should have little trouble with Peng. Kvitova in straights.
Wilansky: This is the only tournament in which we can still have faith in Kvitova. She hasn't played up to expectations since winning the title here in 2011, but nonetheless, Kvitova hasn't lost before the quarterfinals since 2009. She will make life interesting for herself but will win in three.
Bialik: Ivanovic is the better player overall. She has a lot of work to do, but she'll end Lisicki's streak of three straight Wimbledons in which she beats the French Open champ.
Garber: I picked Lisicki to win in three sets, and I still think it's going to happen that way. In the end, the German is more comfortable on this lovely surface.
Isaacson: Lisicki and her massive serve historically do well on grass -- even if she doesn't fare well on other surfaces. Lisicki in a tight three sets.
Wilansky: Ivanovic was out of sorts for a while. Lisicki is a player who needs rhythm. The suspension Saturday hurts the German. Look for Ivanovic to come back and win in three.
No. 13 Eugenie Bouchard versus Alize Cornet
Bialik: Can Cornet keep up the form she showed in upsetting No. 1 Serena Williams on Saturday? Williams doubts it: "If I'm not playing, you know, a great, great match, these girls when they play me, they play as if they're on the ATP Tour, and then they play other girls completely different." If Cornet does suffer a letdown, Bouchard won't let up. She'll win in three.
Garber: She's already been to the semifinals in each of the first two majors this year. She might not do it again (Sharapova would be lurking in the quarters), but give her this one in straights, as Cornet is emotionally spent after knocking off Williams.
Isaacson: Cornet, whose previous best result at a Grand Slam was a round of 16 berth in the 2009 Australian Open, is flying high after her upset of Serena Williams. But she faces a buzzsaw in Bouchard, who at 20 has reached the semis in both Slams this year. Bouchard in three sets.
Wilansky: Emotional win for Cornet, but her time will come to an end. Bouchard is too focused and her all-court game too steady. Bouchard in two.
No. 16 Caroline Wozniacki versus Barbora Zahlavova Strycova
Bialik: For the first time in a while, Wozniacki is looking like her old No. 1 self. She has lost only 11 games in three matches. At 28, Strycova is 5-43 against the top 20. Expect that record to become 5-44 -- and to hear Wozniacki dodge more Rory McIlroy questions in press conferences. Wozniacki in straights.
Garber: Didn't Rory win his first tournament after the breakup? Maybe Woz, too, will benefit from their separation. She's been playing freely -- give her a straight-sets win.
Isaacson: This is only the third time since 2011 that Wozniacki has reached the round of 16 at a Slam. She has spent much of her time here still fending off questions about her broken engagement to Rory McIroy and saying she's not "a victim" and is in a good place mentally. That's bad news for Strycova. Wozniacki in straights.