Iga Swiatek has dominated her opponents during an impressive 21-match winning streak, but on Saturday she faces Yulia Putintseva at Wimbledon, who is known for her tricky tactics.

Novak Djokovic, aiming for his eighth men's singles title, seeks a smoother third-round match, while former champion Elena Rybakina meets wildcard Caroline Wozniacki.

Here are three key matches to watch on day six at the All England Club:

Iga Swiatek is formidable on Wimbledon's grass as she aims for her sixth Grand Slam title. She faces Yulia Putintseva, who annoyed Swiatek earlier this year at Indian Wells with her on-court antics.

Putintseva, born in Russia, was reprimanded by the chair umpire for moving during Swiatek's serve and used a series of underarm serves. Swiatek noted, "Maybe they teach that in Kazakhstan."

Swiatek remains focused on maintaining her standards despite such distractions, seeing this match as a test of her mental training. She is determined to claim her first Wimbledon title.

Novak Djokovic had an easy first-round match but struggled more in his second-round win against British newcomer Jacob Fearnley. Recovering from knee surgery, Djokovic feels he's not yet at his best.

"It's not yet there where I want it to be," he said. "I'm late on balls I usually am not. The longer I stay in the tournament, the better my movement will get."

Djokovic faces Australia's Alexei Popyrin next, whom he defeated in four sets at the Australian Open. With Carlos Alcaraz and Jannik Sinner on the other side of the draw, Djokovic has a clear path to a sixth straight Wimbledon final.

Reaching the final would allow Djokovic to tie Roger Federer's record of eight Wimbledon titles and become the first player to win 25 Grand Slams.

France's Giovanni Mpetshi Perricard brings back memories of an era of big-serving giants like John Isner and Ivo Karlovic. Although slower courts at Wimbledon have lessened the impact of powerful serves, Perricard keeps the tradition alive.

At 2.03 meters (6 feet 8 inches), the 20-year-old leads the ace count at Wimbledon with 78. He values his serve but emphasizes that technique and training are crucial.

The world number 58, who entered the main draw as a lucky loser, faces Finland's Emil Ruusuvuori for a spot in the last 16. Perricard aims to show he's more than just a big server, highlighting the importance of comprehensive skill development.