The Northern Division I Regional Wrestling Championships open Friday at Reno High School and continue through the weekend.Defending regional champion Carson and perennial power Spanish Springs enter the tournament as the top contenders to claim the team title.Spanish Springs produced five No. 1 seeds out of the High Desert League in the individual brackets while Carson produced six No. 1 seeds out of the Sierra League.Opening Ceremonies are set for 3 p.m. today with the first round of wrestling scheduled to begin on three mats directly after.Douglas comes into the tournament with 13 wrestlers set to compete across the 14 …