IRVING, Texas -- Seattle rookie Michael Black scored on a 1-yard run in the third period for the go-ahead touchdown Friday to give the Seahawks a 20-19 exhibition victory over Dallas, spoiling the coaching debut of the Cowboys' Chan Gailey.
Black, a free agent from Washington State, scored after the Cowboys had been flagged three times for having 12 men on the field and also tagged with a 33-yard pass interference penalty on Lee Vaughn that set up the touchdown for a 20-13 lead.
Dallas rookie quarterback Daniel Gonzalez of East Carolina hit passes of 13, 26, and 12 passes to set up a touchdown late in the third quarter by former Seahawk Chris Warren. However, Richie Cunningham's extra point try hit the left upright.
Cunningham also hit the crossbar with a 46-yard field goal attempt in the fourth period.
The Cowboys scored on their second possession under Gailey, the former Pittsburgh offensive coordinator.
Warren followed a block by wide receiver Billy Davis to score on a 15-yard run to give Dallas a 7-0 lead.
However, Warren lost a fumble on the Cowboys 11-yard line which led to rookie Ahman Green's first professional touchdown on the ensuing play. Green had 68 yards on 14 runs. Warren rushed for 32 yards on six carries.
Dallas running back Emmitt Smith bruised his left elbow after three carries for 11 yards and didn't return. He was not seriously injured.
First units of both teams played only in the first quarter on a hot night in enclosed Texas Stadium with the temperature at 103 degrees at kickoff.
Seattle held a 13-10 halftime lead on field goals of 24 and 43 yards by Todd Peterson. Cunningham kicked a 25-yard field goal for Dallas in the second period.
Dallas tied it 13-13 on Cunningham's 20-yard field goal before Black scored after the interference call on Vaughn.
Seattle is 3-0 against Dallas in exhibition games. Arizona is the other team the Cowboys haven't beaten in exhibition play.
It was so hot that, although the game was a sellout, some 20,000 fans were missing from the 65,000 season seats.