Gabbert completed 13 of 16 passes for 112 yards and two touchdowns, the first a 16-yard strike to rookie Justin Blackmon, who was making his preseason debut.
Brees was 10 of 13 for 133 yards and one touchdown, an 8-yard pass to Devery Henderson.
Undrafted rookie Travaris Cadet had 90 yards from scrimmage and a TD for New Orleans (No. 9 in the AP Pro 32).
LIONS 27, RAVENS 12
Stafford went 12 for 17 for 184 yards in four possessions. He failed to produce a score in three drives last week against Cleveland, then came up empty in his first two series against Baltimore before guiding touchdown drives of 93 and 70 yards.
Stafford threw an 18-yard TD pass to Johnson and connected with Titus Young for a 24-yard score to help Detroit (No. 11 tie in the AP Pro32) take a 17-9 halftime lead.
PANTHERS 23, DOLPHINS 17
Tannehill, making his first preseason start for the Dolphins (No. 27 in the AP Pro32), played the entire first half and led six possessions - four of which ended in three-and-out. He found himself under heavy duress for most of the game as the Panthers sacked him three times and batted down three balls at the line of scrimmage.
He finished 11 of 23 for 100 yards passing.
TITANS 30, BUCCANEERS 7
The Titans (No. 21 in the AP Pro32 rankings) got an early boost from their defense and made the most of two first-half turnovers by the Bucs (No. 26).
Tennessee second-year quarterback Jake Locker didn't have an ideal outing in his first NFL start, completing 4 of 11 for 21 yards and an interception.
But his counterpart, Josh Freeman, also looked shaky, completing 4 of 10 for 21 yards in five series of work.
Locker was looking to impress the coaching staff enough in hopes of earning the starting job over veteran Matt Hasselbeck, but got off to a rocky start.
VIKINGS 36, BILLS 14
MINNEAPOLIS (AP) - Christian Ponder threw a first-quarter touchdown pass in a sharp three-possession appearance, and Minnesota breezed past Buffalo, which received a decent performance from backup quarterback candidate Vince Young.
Young's competitor for the No. 2 spot behind Ryan Fitzpatrick is former Vikings draft pick Tyler Thigpen, who threw an interception late in the fourth quarter that was returned 20 yards for a touchdown by rookie linebacker Audie Cole. On the next play from scrimmage, Cole picked off Brad Smith's pass to the same place on the field and ran 30 yards for a score.
CARDINALS 31, RAIDERS 27
Skelton entered after Oakland fumbled the ball away at its 23. He completed 3 of 3 passes for 23 yards.
Kolb was 3 of 3 for 22 yards in Arizona's opening touchdown drive but was sacked in the end zone for a safety. He completed 3 of 6 passes and was sacked three times.
In a matchup of teams tied at No. 23 in the AP Pro32, Oakland had a 184-52 advantage in yards at halftime but trailed 24-11, thanks to two turnovers that resulted in 10 Arizona points. Another Cardinals TD came on a blocked punt as Arizona won for the first time in three preseason games.
Online: http://bigstory.ap.org/NFL-Pro32 and http://twitter.com/AP-NFL