Czech defeats Gauff 6-3, 6-3 to reach last fourPegula eliminates Kostyuk with straight-sets victoryGauff and Pegula remain in contention for final berthLinda Noskova secured her place in the semi-finals of the WTA Finals with a 6-3, 6-3 victory over Coco Gauff on Tuesday, while Jessica Pegula knocked Marta Kostyuk out of the season-ending tournament with a straight-sets win.The Czech, who beat Kostyuk in her opening match, has won both encounters without dropping a set and is assured of advancing to the knockout stage. Gauff and Pegula are both 1-1, with the final round-robin matches on Thursday set to determine who joins Noskova in the last four. Continue reading...