Yahoo Sports reports: World number one Aryna Sabalenka's wait for a singles title on grass goes on after losing in the Berlin last four to Jessica Pegula on Saturday. Her US rival, looking for a second Berlin crown, won 6-4, 6-7 (4-7) 6-0 as Sabalenka's struggles on the surface ahead of Wimbledon starting a week on Monday were again laid bare.