** Shares of UK-based sportswear retailer JD Sports Fashion JD.L fall as much as 6.6% to 74.56p

** Stock top pct loser on FTSE 100 .FTSE index

** Global behemoth Nike NKE.N on Thursday forecast a steeper drop in Q4 revenue than analysts had expected, striking a cautious tone as the U.S. retailer works to rekindle interest among consumers who have defected to trendier rivals

** JD down ~21% YTD, including session's losses

(Reporting by Aby Jose Koilparambil in Bengaluru)

((abyjose.koilparambil@thomsonreuters.com))