Top-seeded Novak Djokovic overcame some struggles before knocking off Austrian Dominic Thiem 6-3, 6-4 on Tuesday to advance to the quarterfinals of the Miami Open at Key Biscayne, Fla.
Djokovic committed nine double faults and saved 14 of 15 break points in holding off the 14th-seeded Thiem.
Djokovic, from Serbia, is seeking his sixth Miami Open title.
Berdych, seeded seventh, has reached the quarterfinals for the seventh time in 12 appearances at the Miami Open.
In a women's quarterfinal match, Switzerland's Timea Bacsinszky ousted fifth-seeded Simona Halep of Romania 4-6, 6-3, 6-2.
The 19th-seeded Bacsinszky overcame a rough first set to win the match and move into the semifinals.
"I came back from a long road," Bacsinszky said during her on-court interview. "The first set was really tough. She's an awesome player and a great fighter.
"For the last year, she has also been an inspiration for me because I believe in hard work and she's one of the players who work really hard, so to be able to play that well against her and to catch the win is really amazing. I'm really happy with the win."
Kuznetsova improved to 6-1 in head-to-head showdowns with Makarova, who took a set off her for the first time in the past five meetings.
In other men's matches, France's Gilles Simon was a 6-0, 6-1 winner over France's Lucas Pouille; Belgium's David Goffin defeated Argentina's Horacio Zeballos 7-5, 6-3; Australian Nick Kyrgios beat Russia's Andrey Kuznetsov 7-6 (3), 6-3; Canadian Milos Raonic swept Bosnia's Damir Dzumhur 6-0, 6-3; and France's Gael Monfils rallied past Bulgaria's Grigor Dimitrov 6-7 (5), 6-3, 6-3; and Japan's Kei Nishikori eliminated Spain's Roberto Bautista Agut 6-2, 6-4.