Richmond-Burton ’s most recent shutout required center back Forest Wells clearing a ball rolling toward an empty net.

It required Rockets keeper Easton Wold making multiple athletic saves.

It required the help of a post. And a crossbar.

Not all clean sheets are squeaky clean. Often, they require doing the dirty work – defending.

“That’s what we’re best at,” R-B coach Casey DeCaluwe said.

The Rockets’ 1-0 win over Francis W. Parker in the Class 1A Johnsburg Sectional semifinals Tuesday was their 15th of the season, third in the state tournament and fourth in a row overall.

The victory earned R-B (17-7-2) a berth in Saturday’s 2 p.m. sectional final against Chicago Academy (15-4-3).

Few of the Rockets’ clean sheets have been harder to earn than the one against Francis W. Parker (11-9

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