LLEYTON HEWITT, TOMMY HAAS TO BE NEW ADDITIONS TO POWERSHARES SERIES IN 2018 (February 26, 2018) LOS ANGELES – Former Wimbledon and U.S. Open champion Lleyton Hewitt and former world No. 2 and 2000 Olympic silver medalist Tommy Haas will join the PowerShares Series champions tennis circuit in 2018, InsideOut Sports & Entertainment, the organizers of the PowerShares … [Read more...] about Lleyton Hewitt, Tommy Haas To Be New Additions To PowerShares Series In 2018