Ryan Leighton improved to 4-0 by tossing six shutout innings in the opener. Lucas Marshall followed with a five-inning shutout performance in the nightcap.
Matt Chandler threw one scoreless inning in the first game and drove in five runs on the day to pace Poca.
Nitro 12, Winfield 8 - The Wildcats jumped to a 12-3 lead after four innings and held on for the home win.
Jacob Williams had three hits for the Wildcats (18-10), while Matt Harrison, Caleb Fridley and Evan Eich had two hits apiece.
For Winfield (11-16), Jordan Clark smacked a two-run homer, while Josh Bumgarner had two hits, including a double.
Charleston Catholic 15, Williamstown 1 - The Irish pounded out 15 hits in cruising on the road.
Rocco Wilcox, Kiefer Hovorka and Sam McKown had three hits apiece for Catholic (19-8), with McKown smacking a homer and knocking in three runs. Wilcox also had three RBI.
For Williamstown (19-10), Avery Goff had a pair of singles.