How does a baseball team go from scoring 17 runs to 1 run against the same team in a span of two days? Better pitching for one and better defense. And, you might throw in a little overconfidence while you’re at it. After pounding out a 17-5 win Tuesday at North Valleys, the Panthers’ Mauricio Varela and two relievers limited Carson to four hits and gained a split in the series with a 3-1 win Thursday night at Ron McNutt Field. The loss dropped Carson to 4-3 overall and 1-1 in league play entering Saturday’s home game (11 a.m.) against …