Up until last week, University of Hawaii quarterback Colt Brennan — when he has been on the field — hadn't shown a sign of weakness.

In four games this year (he missed the Charleston Southern game with a bad ankle), Brennan has thrown for 1,663 yards and 15 touchdowns.

Last week, however, in a 48-20 victory over Idaho, the Heisman Trophy candidate threw five interceptions and had a pass-efficiency rating of 124.28 — his lowest since a 114.4 rating against Fresno State in 2005.

The Vandals managed just three points off the five picks, but Utah State coach Brent Guy said the Aggies need to take advantage of those miscues when they take on No. 16 Hawaii (5-0, 2-0) tonight at 10 p.m. in Aloha Stadium. The game can be seen live on KJZZ.

"A year ago when we played them (in Week 9), he had not thrown an interception when he got to us," Guy said. "This year he's already thrown six of them and five of them were last game, so that's something we'll have to try to build on and use as motivation for our kids in that we've got to get the ball turned over."

Through five games this year, the Aggies have seven interceptions. In 2006, they had just six, and in 2005 they had eight. Utah State has at least one in every game this season except for the season-opener against UNLV.

Roy Hurst leads the team with two.

Although creating interceptions has been a strength of the Aggie defense, it is still allowing 429 yards per game and 240 yards via the air.

The defense will be tested by Brennan, who had one of the best pass-efficiency games of his career (243.1) last year in a 63-10 victory. He completed 18-of-29 passes for 413 yards and six touchdown, which was one shy of tying his career high.

The last time the Aggies played in Hawaii, they trailed 34-3 at the break but outscored the Warriors 20-16 in the second half in suffering a 54-23 loss.

Offensively, the Aggies are averaging 239 yards total offense (117th of 119 in the nation) and are scoring just 15 points a game (116th).

Utah State will need both the offense and defense to play well above their averages in order to have a chance against the Warriors.

"Hopefully we can put up a lot of points, just like they do. If not, it will probably won't be in our favor of winning," Utah State receiver Kevin Robinson said. "Football is a weird game, so we're just going to have to wait and see what happens when we go out there and play."

The Aggies have lost 11 straight games — 10 on the road — and 16 of their last 17.

Tonight's game marks the 44th time the Aggies will play a team ranked in the Associated Press Top 25, and they are just 1-42. Their last win over a ranked team came over Fresno State in 1991.

Aggies on the air

Utah St. (0-5, 0-1) at No. 16 Hawaii (5-0, 2-0)

Today, 10 p.m.; Aloha Stadium


Radio: 610AM (Logan), 1230 or 1320AM (S.L.)

E-mail: jhinton@desnews.com