World number one Aryna Sabalenka wins her opening match at Wimbledon 2026, defeating Serbian qualifier Teodora Kostovic in straight sets. Both reports describe a comfortable performance by Sabalenka, who moves into the second round without dropping a set. The match is played on grass and finishes quickly, with one source citing a final score of 6-2, 6-3. The other report characterizes the win as commanding and notes the match takes place in the first round. Sabalenka’s victory is presented as a routine start to her tournament, with Kostovic entering as a qualifier. With the straight-sets result confirmed across the two outlets, Sabalenka advances to continue her campaign at Wimbledon 2026.