The Bulls regained the lead when Dow returned a fumble 90 yards before Brian Ingram caught a 46-yard touchdown for the Knights.
After Shawn Coyle opened the fourth-quarter scoring with a 4-yard touchdown catch, the Knights took the lead, 28-21, with 10:21 left in the game when Jerry Lenier scored his third touchdown of the day on a 2-yard run.
Interboro 38, Chester 0 - Interboro took advantage of 38 first-half points to trample visiting Chester.
Nick Rentos threw for a pair of touchdowns and ran in another for the Bucs.
Roman Catholic rallied for 14 points in the fourth quarter to come back and beat Father Judge, 28-17, at Northeast.
Chris Cruz returned a kickoff 50 yards, the Cahillites' second return touchdown of the night, to put Roman Catholic ahead, 21-17. Will Fuller sealed the game with a 20-yard touchdown catch.
Fuller opened the scoring with a 97-yard kick return.
Andrew Guckin ripped off five touchdown runs and Archbishop Wood easily topped Bonner-Prendergast, 56-35, at Upper Darby.
In the first half, Guckin broke off three long touchdown runs, measuring 77, 30, and 33 yards.
In a losing effort, Bonner-Prendergast's Colin DiGalbo threw five touchdown passes.
Summers caught four of his five touchdowns, including scores of 73, 31, and 20 yards.
Suburban One National
Denny Lord needed just three carries to rush for 67 yards and a pair of touchdowns as Neshaminy downed visiting Abington, 21-14.
Suburban One American
Terry Brown ran for three touchdowns to lead Plymouth Whitemarsh at Upper Dublin, 42-14.Corey Kelly chipped in two more touchdown runs, of 60 and 65 yards, for the Colonials.
Mark Shiiba nailed a 35-yard field goal with 11 seconds left as Strath Haven rallied to top Springfield (Delco), 16-14.
The Cougars had taken a one-point lead 2 minutes earlier on a two-yard quarterback sneak from Cameron Durham.
Garnet Valley 41, Penncrest 14 - Ryan Corkery punched in four touchdowns on the ground and threw for another in Garnet Valley's blowout win at Penncrest.
Corkery completed a 15-yard touchdown pass to Jake Irving and rushed for three scores in the Jaguars' 28-point third quarter.
Marple Newton 14, Radnor 13 - After Jimmy Blake's three-yard touchdown in the fourth, host Radnor gambled and went for two but came up short as Marple held on for the win.
Matt Galambos ran for a pair of touchdowns and Chris Sukonik caught a 70-yard score from Brendan Burke as Haverford School knocked off host Penn Charter, 27-6.
Public Class AAA
Mike Edwards tossed three touchdown passes and ran for another score in host Ben Franklin's 46-16 win over Martin Luther King. Tyreik Coaxum added 114 yards and a touchdown on 11 carries for the Electrons.
Ben Franklin received some points from its defense. Jymil Harmon returned an interception 12 yards for a touchdown, and Edward Dennis capped the scoring with a 48-yard interception return.
Bok 47, Bartram 6 - Larry Pelzer ran for 159 yards and four touchdowns on 13 carries as Bok rolled at Bartram. Bok held Bartram to 47 yards and three first downs on offense.
Ryan Brady rushed for just 35 yards, but his three-yard touchdown in the fourth proved to be enough for La Salle to edge West Catholic, 28-26, in a matchup of two of last season's Catholic League champions.
West Catholic sophomore Antwain McCollum threw for 336 yards to eclipse the previous school mark of 261 yards set in 1986 by Steve Cianci.
La Salle was led by Jimmy Herron's 89 rushing yards and two first-half touchdowns. Sean Coleman, a wide out, added a 27-yard rushing touchdown in the second half and Mike Eifi rushed for 81 yards on seven carries.
Mastbaum 22, Roxborough 16 - Joseph Walker threw for 134 yards and three touchdowns for visiting Mastbaum.
Isaiah King delivered a rushing touchdown and a pair of interceptions for Roxborough.
Germantown 38, Southern 12 - Tyron Blackwell made nine tackles and returned an interception 65 yards for a touchdown for visiting Germantown. Ishmail Dargan ran for two touchdowns for the Bears.
Contact Nick Carroll at firstname.lastname@example.org or follow on Twitter @NickJCarroll.