Two world class jugglers will be performing in Knoxville Tuesday as part of the Knoxville Public Library’s summer reading program. What’s Up is a juggling act performed by Iowa native Doug Sayers. He’ll be joined by special guest Dean Franzen. Library Youth Services Coordinator Holly Shelford says that they are very excited to have both of the jugglers in town to put on a free show for all ages. Sayers is currently the third-ranked juggler in the world. The performance starts at 10:30 Tuesday on the 2nd floor of the Library. As always this summer, information about the Library’s expansion project will also be available.