The Dallas Wings suffered an 87-83 loss at the Los Angeles Sparks Tuesday night, squandering a chance for a marquee road win.A layup from center Liz Cambage, who finished with 25 points, brought Dallas within one point with 39 seconds to go. But a Chelsea Gray fadeaway but the Sparks back up by three and the Wings failed to score until Los Angeles free throws had put the game away.While Kayla Thornton did what she could to help Cambage with a career-high 16-point performance, the Wings were hurt by 17 turnovers and a rocky showing from Skylar Diggins-Smith.