Yokohama F Marinos went down 1-0 away to South Korea’s Ulsan Hyundai on Wednesday in the first leg of the Asian Champions League semifinals. Making their first appearance at this stage of the competition, the 2022 J-League champions Marinos had plenty of shots but lacked a cutting edge against the two-time reigning K League champions at Ulsan Munsu Football Stadium. Lee Dong Gyeong gave Ulsan the 19th-minute lead after forward Joo Min Kyu controlled a low cross and laid the ball off for the midfielder to sweep home past Marinos keeper William Popp, converting their only on-target first-half sh…