FRISCO — Tesho Akindele had an early goal and FC Dallas got the go-ahead score on the Philadelphia Union’s own goal in a 2-1 victory Friday night.FC Dallas (7-7-5) took the lead in the 49th minute when Philadelphia (4-8-6) misplayed a clearance inside the box. Fabinho deflected the ball off a helpless Sheanon Williams, who was credited with the own goal. Akindele opened the scoring in the 26th minute, one-timing a straight-ahead chip from Blas Perez. The Union tied it just before halftime. Dallas goalkeeper Chris Seitz hurt his knee on a goal kick in the 72nd minute and left on a stretcher.