Answer based on context:

Hoping to rebound from their loss to the Cowboys the Texans flew to Oakland-Alameda County Coliseum for an AFC duel with the Raiders. The Texans took the early lead in the 1st quarter as RB Derrick Ward got a 33-yard TD run. The Raiders replied with RB Michael Bush making a 2-yard TD run. The Texans got the lead back when QB Matt Schaub completed an 11-yard TD pass to TE Joel Dreessen. The Raiders responded in the 2nd quarter with QB Bruce Gradkowski getting a 13-yard TD pass to FB Marcel Reece. In the 3rd quarter the Texans started to rally with RB Arian Foster making a 74-yard TD run, followed by kicker Neil Rackers getting a 35-yard field goal, then in the 4th quarter Schaub threw a 10-yard TD pass to RB Arian Foster. The lead was cut with Gradkowski found TE Zach Miller on a 14-yard TD pass, and kicker Sebastian Janikowski nailing a 39-yard field goal.

Who threw the longest TD pass?
Gradkowski