P V Sindhu and Lakshya Sen suffered straight-game losses to their respective opponents in the women’s and men’s singles quarter-finals, marking the end of Indian challenge in the USD 500,000 Indonesia Masters badminton tournament here on Friday.

Sindhu lost to top seed and World No. 4 Chen Yu Fei of China 13-21, 17-21 in the quarter-final contest that lasted 42 minutes to bow out of the Super 500 event.