BattleHawks look to build on opening win

St. Louis Battlehawks safety Dexter McCoil (26) tackles Dallas Renegades quarterback Philip Nelson (9) during an XFL football game, Sunday, Feb. 9, 2020, in Arlington, Texas. St. Louis won 15-9. (AP Photo/Brandon Wade)The St. Louis BattleHawks went into Sunday’s XFL opener in Dallas as 9 ½-point underdogs. And they came away with a well-earned 15-9 victory over the Renegades.

But head coach and general manager Jonathan Hayes is not completely satisfied. At least not yet.

“Obviously, we still have plenty of things to clean up — the false starts, we can’t put the ball on the ground, the snap over the quarterback’s head — those are things we can improve on,” Hayes said earlier this week while…