The competitions of Qatar International Classic Squash Championship 2013  hosted by Qatar Squash Association (QSA)  will enter crucial rounds  at  the Khalifa International Tennis and Squash Complex on  Tuesday. Prominent world squash stars will compete in the 16th Round  matches on Tuesday, where Egyptian Mohammed Al Shorbagi will will lock horns against Lawrence Yan ( Netherlands), as his countryman Umro Shabah will shake hands with the  south African Steven Konger. Notable names are participating in the week-long action at the $150,000 prize money event include, recently crown world champion Englishman Nick Matthew and compatriot James Willstrop Source: Qatar Olympic Committee