Coming off their home win over the Cardinals, the Redskins flew to Cowboys Stadium for a Week 3 NFC East duel with the Dallas Cowboys on Monday night.  Washington threw the game's opening punch in the first quarter with a 46-yard field goal from kicker Graham Gano.  The Cowboys answered with kicker Dan Bailey getting a 41-yard field goal, while the Redskins replied with Gano's 27-yard field goal.  Dallas would take the lead in the second quarter as Bailey made a 27-yard and a 32-yard field goal, yet the Redskins closed out the half with Gano's 50-yard field goal. Washington began the third quarter with quarterback Rex Grossman finding running back Tim Hightower on a 1-yard touchdown pass.  The Cowboys would end the third quarter with Bailey making a 41-yard field goal.  Dallas regained the lead in the fourth quarter with Bailey booting a 23-yard and a 40-yard field goal.  The 'Skins tried to rally, but the Cowboys' defense held on to preserve the win.
Question: Who threw the only touchdown of the game?
Answer: Rex Grossman