Lakshya Sen is in the form of his life. The 20-year-old continued his giant-killing spree as he knocked out world No. 3 Anders Antonsen of Denmark 21-16, 21-18 and stormed into the quarterfinals of the All England Championships in Birmingham on Thursday. Satwiksairaj Rankireddy and Chirag Shetty routed Germans Mark Lamsfuss and Marvin Seidel 21-7, 21-7 to also move into the last eight. Gayatri Gopichand and Treesa continued their dream run as they entered the women's doubles quarterfinals. After losing a close first game 18-21, the duo was leading 19-14 in the second when their opponents Greysia Poli and Apriyani Rahayu retired. Former world No. 1 Kidambi Srikanth went down fighting to fifth seed Anthony Sinisuka Ginting of Indonesia 9-21, 21-18, 21-19.