MELBOURNE, Australia — As the sun rose Thursday morning, Justin Gimelstob was relaxing the only way he knows how, by sifting through more than 300 combined unread email and text messages on his smartphone while burning 857 calories riding a stationary bicycle for an hour.
If there was a multitasking Hall of Fame, Gimelstob would be a first-ballot inductee. His responsibilities at the Australian Open include coaching John Isner, managing the corporate appearance schedule of the retired three-time Grand Slam champion Lindsay Davenport, conducting business related to the ATP Tour in his capacity as a member of the board of directors, commentating for Tennis Channel and serving as the executive producer of the Tour’s magazine show.