The 22nd-ranked UCF Knights were dominant in the first half against East Carolina, but that doesn't mean there weren't some troubling signs even with them taking a commanding 42-14 lead into halftime.

The biggest concern was the Knights' third-down defense for the second week in row. After allowing Cincinnati to convert 9 of 15 third downs last week, the Knights allowed ECU to convert four of eight third downs in the first two quarters Saturday night.

The Pirates, led by the arm of quarterback Thomas Sirk, converted three of those third downs durign a scoring drive late in second quarter, scoring on a third and goal when Sirk hit receiver Davon Grayson on a 4-yard slant with 1:41 to play in the first half.

UCF coach Scott Frost talked all week about how the third-down defense must improve. It's almost certain that will be a major point of emphasis during halftime.