A dual grand slam victor, Kuznetsova won 6-2 6-4 in one hour and 31 minutes to qualify for her fourth quarter-final at the All England Club - but first in a decade.
The decision to make five-time Wimbledon victor Williams the only big-name woman to play on Centre Court was a unanimous one, he said.
Konjuh, who knocked Agnieszka Radwanska out of the US Open a year ago on a run to the quarter-finals, was no shrinking violet though and appeared willing to take Williams on from the baseline.
The Spaniard dispatched Kerber in a high-quality tussle Monday with fill-in coach and 1994 Wimbledon champion Conchita Martinez looking on.
Again marrying winners with unforced errors - 42 played 39 respectively - Ostapenko broke her opponent six times en route to setting up a clash with Venus Williams. Wozniacki has not reached the quarterfinals at the All England Club in 11 appearances. When asked about her feeling, she said: " I don't know yet.
Johanna Konta, the bookmakers' favourite for the title, became the first British woman to reach the quarter-finals since Jo Durie in 1984.
On the other hand, it remains to be seen as to where Williams will conclude her latest run through Wimbledon with a quarterfinal matchup now on the horizon.
On Court No. 1, Rybarikova was playing Vandeweghe.
Murray managed, but only just, to collect himself and pull back to level 6-6 in the first and then win the tie-breaker 7-1, aided by a Paire double-fault and sequence of backhands hit either wide or long.
And that teed up an appointment on Tuesday with Latvian 20-year-old Ostapenko, who was a 6-3 7-6 (8/6) victor against Ukrainian fourth seed Elina Svitolina.
"I'm going to see what will happen when I will be on the lawn, said Williams about Ostopenko".
The main courts will start at about 1 p.m., with former No. 1 Victoria Azarenka first up on Centre Court. He's been there so many years.
The second Monday at Wimbledon is the busiest in tennis, with all 16 fourth-round matches played on the same day in a schedule that will produce all eight female and all eight male quarterfinalists.