By Daniel Chavkin The future Texas quarterback had a rough night on Friday. Arch Manning and the Isidore Newman football team suffered their first loss of the season Friday night, falling to the Many Tigers in a true road game by eight points. The Tigers, who’s defense features four-star recruits Tackett Curtis—a USC commit—and Tylen Singleton, pressured Manning throughout the night and made life very difficult for the senior quarterback. Manning didn’t complete a pass until the second quarter, but still finished the game with two passing touchdowns once he got the offense going. Isidore Newma…