Wimbledon 2021: Americans Sloane Stephens, Frances Tiafoe score upsets on Day 1
Americans Frances Tiafoe and Sloane Stephens began Day 1 at Wimbledon with upsets Monday. Tiafoe upstaged men’s No. 4 Stefanos Tsitsipas, and Stephens ousted women’s No. 10 Petra Kvitova. Tiafoe earned the first upset of the day