WEST SACRAMENTO, Calif.-After winning their eighth PCL South Division championship in 10 years, the Sacramento River Cats (86-57) are headed to the postseason, yet again. Sacramento is taking on the Tacoma Rainiers (74-70) of the Pacific North Division. They were 9-7 against the Rainiers in the regular season. The River Cats’ pursuit of a third straight Pacific Coast League and Triple-A title got off to a good start on Wednesday. Veteran right-hander Chris Gissell had one of his best performances on the mound this season. He gave up seven hits and two earned runs and had six strikeouts in five innings of work. Brett Wallace and Chris Carter both hit home runs as Sacramento cruised