Limestone senior Tanner Bradley struck out 13 and pitched a three-hitter as the Rockets beat Metamora, 3-1, on Monday.
Bradley, who earlier this season threw a no-hitter, also drove in a run. The win pushed Limestone to the top of the Mid-Illini Conference standings.
Dunlap, which started the day tied for the lead, was blanked by Washington, 3-0. Panthers pitchers Brian Pershing and Tate Hardesty combined on a one-hitter.
Morton pulled into a second-place tie with Dunlap following a 3-1 win at Pekin.
At Dozer Park, Peoria Christian beat Peoria Heights, 12-4.