Arch Manning didn’t waste anytime getting the highlight of the day during Texas‘ spring game. The second-year quarterback threw a 75-yard touchdown. In the first quarter, Manning let it rip. And boy, Texas fans can see why he was the top prospect in his class. The play can be seen below. God forbid something happens to starting quarterback Quinn Ewers, head coach Steve Sarkisian has full confidence in Manning and it’s in part to the quarterback’s relationship in the room. “I don’t take that for granted,” Sarkisian said on College Sports Radio on Sirius XM. “You know, there’s a lot of other sch…