http://find-relation.dk/wiz/forum/calendar_week.asp?M=4&Y=2014&W=4 - http://find-relation.dk/wiz/forum/calendar_week.asp?M=4&Y=2014&W=4 is an excample of the Calendar showing tennis tournaments next week (Month 4, Year 2014, Week 4).
In Denmark - and probably other contries too - the week starts monday.
I suggest, that it will be possible to choose start of week in the configuration of Date and Time Setting.
In that case, the example above would not be "disturbed" by tournaments ending sunday.
In most tennis tournaments the main Draw starts monday and the finale is saturday or sunday.
Regards Ole Dalsgaard Jensen