Answer based on context:

Donning their throwback uniforms, the Steelers played the Baltimore Ravens in their first Monday Night game of the season. Multiple Steelers starters did not play in the game, due to various injuries. After a 3-3 first quarter, Baltimore took a ten-point lead into half time with a field goal and touchdown pass in the second quarter. Rashard Mendenhall&#8212;in his first NFL start&#8212;left the game in the third quarter with a season-ending shoulder injury. On Pittsburgh's third drive of the half, Roethlisberger connected with Santonio Holmes for a 38-yard touchdown pass. On the first play of Baltimore's ensuing drive, James Harrison's forced fumble was picked up by LaMarr Woodley and returned 7&#160;yards for a touchdown. The two touchdowns within 15&#160;seconds took the Steelers from ten points behind to four points ahead. In the final quarter, the Steelers' offense was stopped on the one yard line and Reed kicked his second field goal of the night. Baltimore drove 76&#160;yards and tied the game with a touchdown. Neither team was able to score on their final drive as the regulation clock expired. Baltimore won the overtime coin toss and elected to receive. The Ravens started the drive at their own 15&#160;yard line. The Steelers held them for no gain on the first two plays and Lawrence Timmons sacked Flacco on third down. The Steelers took over after a punt and Mewelde Moore caught a 24-yard reception to bring the Steelers to Baltimore's 31-yard line. Jeff Reed converted a 46-yard field goal to win the game for the Steelers. Reed was named the NFL's special teams player of the week. With the win the Steelers passed the Ravens for first place in the AFC North at 3-1, as well as extending their all-time record of 14&#160;consecutive home wins on Monday Night Football.

Who scored the first touchdown of the second half?
Santonio Holmes