CATS is a mixed doubles league that offers fun both on and off the courts with year-round tennis and social events.

CATS members play indoors at Lakeshore Sport & Fitness on Wednesday nights from 9-11 PM in Fall, Winter/Spring and Summer Sessions. Teams are divided into C, B, A and Open Levels so players of most skill levels can find a fit. Social events include tennis round-robins and outings to professional sports events.



Name Change: As of September 1, 2019, Chicago Advertising Tennis Society will become Chicago Area Tennis Society. See more.

Online Renewal — Just in Time to Renew Your CATS Membership: 
Our new fiscal year began September 1, so all 2018-2019 memberships expired on August 31. If you have not renewed your membership for 2019-2020, now you can do it online. Look for an email with instructions. If you have problems, contact: We will still accept the paper form .

Current CATS Officers to be Retained for Another Term: As of the July 15 deadline, no one signed up to run for any of the four CATS’ officer positions of president, vice-president, treasurer or secretary, so there be no formal election. The current officers — Bill Himmelmann, President, Michael Fox, Vice-President, Carolyn Popp, Treasurer, and Joyce Weber, Secretary — will continue their current terms of office, which run through August 31. They will begin new two-year terms on September 1, the beginning of CATS’ new fiscal year.

Members-only section: This area of the website includes the member directory, division schedules, team lists and sub lists for each division, the prize list and more. Click the link in the menu above and sign up to get access. If you forget your password, click here for instructions on how to reset it.

CATS Accepts Payments with Zelle: Using this free service, you can make payments from the web or your mobile device in seconds. See how.

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