Marwan ElShorbagy came through in five games in Chicago ©Getty Images

Fifth men's seed Marwan ElShorbagy prevailed from a cracking five game contest with Egyptian team-mate Mohamed El Sherbini to reach the third round of the Professional Squash Association World Championships.

The 2017 runner-up - who lost that final to his brother Mohamed - eventually came through 9-11, 11-6, 11-4, 9-11, 11-4 at the University of Chicago.

Both players received code of conduct warnings from the referee in a fiery encounter.

"Results wise, I'm happy to get the win today," said ElShorbagy, who also took aim at the level of officiating.

"We come from the same generation and it was a tough battle. 

"I had to focus all the way through and I'm happy to get the win in the end, but the quality of the refereeing wasn't up to the standard that I expected from the World Championship."

Egypt's top seed and 2018-2019 world champion Ali Farag breezed through to the last 16 against Malaysia's Eain Yow Ng, 11-6, 11-9, 11-5.

Mohamed ElShorbagy, who won the title in 2017 and is seeded second, came through 11-7, 11-6, 11-7 over England's Patrick Rooney.

He will become world number one if he reaches the final.

Defending champion and third seed Tarek Momen dropped a game but continued his pursuit of regaining the crown by winning an all Egyptian affair against Youssef Soliman, 11-7, 4-11, 11-7, 11-5.

New Zealand's fourth seed Paul Coll, beaten in the last final by Momen, won 11-7, 11-8, 11-8 against France's Victor Crouin.

Amanda Sobhy continued her progression on home soil for the United States ©PSA
Amanda Sobhy continued her progression on home soil for the United States ©PSA

In the women's draw, Egypt's defending champion and top seed Nour El Sherbini made serene progress as she targets a third title in a row and a fifth in six years.

She beat Emilia Soini of Finland 11-3, 11-5, 11-8 in just over 20 minutes.

"I am definitely very happy," she said.

"She reminded me that we played against each other ten years ago in the World Junior Championships. 

"We haven't played each other since, a long time."

Egyptian second seed Nouran Gohar knocked out Scotland's Lisa Aitken 11-3, 11-4, 11-5 and France's third seed Camille Serme was too strong for Australia's Donna Lobban, 11-9, 11-3, 11-3.

Fourth seed Hania El Hammamy, another Egyptian, knocked out Tze Lok Ho of Hong Kong 11-5, 11-2, 11-6 and American home hope Amanda Sobhy, the fifth seed, kept her chances alive by beating Nada Abbas of Egypt 11-9, 11-5, 11-5.

Olivia Clyne and Olivia Fiechter also made it through for the United States on an encouraging day for the host nation.

Third round matches will take place tomorrow.