DAYTON - What a difference a day makes.On Friday, Maribel Ledezma was held scoreless by Lowry in a lopsided defeat. On Saturday, she scored a game-high 21 points to lead Dayton to a 55-43 win over Sparks in a Northern Division I girls basketball game."If a team shuts her down like Lowry did, we don't have somebody to come in and help," Dayton coach Cliff Serawop said. "She really stepped up today."And, it was Ledezma dominating from the outset. She scored seven of Dayton's first 10 points and had nine of Dayton's 20 by the half, as the Dust Devils …