The Jaguars also were stopped on a fourth-and-1 from the Lower Moreland 1 and fumbled away another drive at the Lions' 5.
But a swarming defense, which limited Lower Moreland (4-3) to just eight first downs and 96 yards of total offense, never allowed the Lions to capitalize.
The result was the Jaguars' best performance of the season.
``They blocked and tackled better than we did. They executed better than we did. And they beat us physically at the line of scrimmage,'' said a somber Mark Mayson, Lower Moreland's coach. ``Everything and everyone hurt us today. They're a good, tough football team that really took it to us.''
Garnet Valley's dominance started with its first possession and never let up.
Quarterback George Delano capped an eight-play, 65-yard drive with a 5-yard touchdown pass to tight end Mike DeCarlo as Garnet Valley grabbed a quick 7-0 lead. Brian Stringer added the first of his three PATs.
Garnet Valley made it 14-0 on its second possession, driving 64 yards in 10 plays. Datillo went the last yard for the score.
The Jaguars recorded a second-quarter safety when a Lower Moreland punt snap skidded through the back of the end zone.
Garnet Valley tacked on its final touchdown on its first possession of the second half, when George Shahadi sprinted 17 yards on a wingback counter. The Jaguars' defense set up the score after holding Lower Moreland on a fourth-and-2 from midfield.
Keith Dougherty chipped in with 87 yards on 16 carries for Garnet Valley, which finished with 398 yards of total offense. Delano hit on 9 of 16 passes for 78 yards.
Defensively, the Jaguars held Lower Moreland without a first down on three of the Lions' five second-half possessions.
``Besides the penalties [five for 55 yards], which we shouldn't be doing, I thought we played great today,'' Datillo said. ``Early in the year, the penalties and turnovers really were hurting us. We're starting to cut them down, but we can still do better. Today was the best we've done so far.''
Jaguars coach Mike Ricci agreed.
``That was our top performance, without a doubt, on the year,'' Ricci said. ``We did a lot of good things today.''