Jonas Bjorkman Pictures
PRAGUE, CZECH REPUBLIC - SEPTEMBER 21: Jonas Bjorkman jokes with Bjorn Borg, Captain of Team Europe looks on during practice ahead of the Laver Cup on September 21, 2017 in Prague, Czech Republic. The Laver Cup consists of six European players competing against their counterparts from the rest of the World. Europe will be captained by Bjorn Borg and John McEnroe will captain the Rest of the World team. The event runs from 22-24 September. (Photo by Julian Finney/Getty Images for Laver Cup)