Coming off their divisional road win over the Bengals, the Steelers went home, donned their throwback uniforms again, and played a Week 9 Monday Night divisional duel with the Baltimore Ravens.  In the first quarter, Pittsburgh came out strong as QB Ben Roethlisberger completed a 17-yard TD pass to TE Heath Miller and a 15-yard TD pass to WR Santonio Holmes.  In the second quarter, the Steelers increased their lead with Roethlisberger completing a 30-yard TD pass to WR Nate Washington, a 35-yard TD pass to Holmes, and a 7-yard TD pass to Washington.  Afterwards, the Ravens managed to avoid a shutout as RB Willis McGahee got a 33-yard TD run.  In the third quarter, Pittsburgh increased its lead with kicker Jeff Reed nailing a 22-yard field goal, while the defense continued to shut down Baltimore's offense. With the win, their 12th straight in Monday Night Football home games, the Steelers improved to 6-2. Ben Roethlisberger had a career game as he completed 13 of 16 passes for 209&#160;yards and a career-high 5 touchdowns for his second career "perfect game."  LB James Harrison had a career day with three forced fumbles, a fumble recovery, an interception, and 3&#189; sacks. During halftime, the Steelers honored their All-Time team.  Members included Joe Greene, Terry Bradshaw, Franco Harris, Jerome Bettis, Rod Woodson, John Stallworth, Lynn Swann, and Mel Blount.

Answer this question based on the article: How many TD passes did Roethlisberger complete in the first quarter?
2