Litchfield big man Dom Dietel keyed his team's domination of the line of scrimmage, an advantage the Dragons used to engineer a minor playoff upset victory.
With its 13-6 victory Tuesday at Rockford in the Class 3A, Section 2 quarterfinals, Litchfield advances to play at 7 p.m. Saturday at No. 1 seed Providence Academy (8-0).
No. 4 seed Rockford (6-3) led 6-3 at halftime after senior quarterback Sam Zilmer and senior running back Conner McCracken connected for a 37-yard touchdown.
Meanwhile, No. 5 seed Litchfield (6-3) remained stuck in a season-long slump when it came to finishing drives. Even when the 6-foot-4, 277-pound Dietel recovered a fumble on a second quarter sack and ran to the Rockets' 10-yard line, the offense settled for a 30-yard field goal from sophomore Garrison Jackman.
Still, Litchfield won most of the battles in the trenches. Denied a touchdown, Dietel and the defense produced points in the third quarter.
Rockford received a personal foul call on the opening kick return and started the third quarter from its 5-yard line. Litchfield pounced.
"We watched a lot of film, so when they brought in No. 6 at quarterback, we knew they were looking to run-option or a sweep," Dietel said. "We knew they weren't going to pass, so our defensive linemen pinned their ears back and said, 'We're just going to get there.' "
Senior Wyatt Larson broke through and tackled a Rockford ball-carrier in the end zone for a safety. The Dragons cut their deficit to 6-5 less than one minute into the third quarter.