09/03/2026
156 HOURS: TWO ANDOVER FRIENDS TAKE ON THE WORLD
In May 1990, two Wichita State University students, Michael Bornholt and Shannon Grate, set out to do something few people would ever consider. For 156 hours, they kept a tennis marathon going at WSU. That's 6 1/2 days of tennis!
WSU student newspaper gave us a glimpse into what those days were like. The two began at 7 AM on a Friday and continued until 7 PM the following Thursday, getting only about nine hours of sleep during the ordeal. Grate won 148 sets during the marathon, while Bornholt won 132. The event also served as a fundraiser for Wichita State's Student Organization of Social Work.
In February 2005, Guinness World Records wrote to Andover's Shannon Grate regarding his 1990 record, which had yet to be recognized publicly. The letter explains that Guinness had changed its policy concerning marathon attempts because of concerns raised by medical experts about participants pushing themselves too hard and potentially damaging their health. Guinness had therefore stopped accepting new attempts of this type and established new guidelines. This change was announced following their submission, which they had abided by all existing guidelines for. The letter tells Grate the old record would no longer be considered a current Guinness World Record under the new rules. But regardless of how the rules later changed, nothing could change what Michael Bornholt and Shannon Grate had already accomplished. At the most impossible point, they kept going, did the work, endured the exhaustion, and crossed the finish line! They earned their place in history, and that part can never be taken away. Its also part of our
We have this certificate in our archives at the Andover Historical Museum. It preserves the moment when two Andover connected young men became world-record holders, while the later letter documents the changing standards surrounding extreme endurance records. Good job fellas! We are still proud of your enormous accomplishment!
Newspaper clipping from Wichita Eagle May 11, 1990.