Hoping to rebound from their road loss to the Broncos, the Browns flew to M&T Bank Stadium for a Week 3 AFC North duel with the Baltimore Ravens. Cleveland would trail early in the first quarter as Ravens running back Willis McGahee got a 7-yard touchdown run, followed by kicker Steven Hauschka getting a 36-yard field goal. The Browns' deficit would increase in the second quarter as Hauschka nailed a 33-yard field goal, while McGahee got a 15-yard touchdown run. In the third quarter, things continued to get worse for the Browns as running back Ray Rice got a 9-yard touchdown run. In the fourth quarter, Cleveland would manage to get on the board as kicker Billy Cundiff made a 29-yard field goal. Afterwards, Baltimore closed out the game as quarterback Joe Flacco completed a 72-yard touchdown pass to wide receiver Derrick Mason. Starting quarterback Brady Quinn (6 of 8, 34 yards, 1 INT) was benched after a dismal first half performance, while Derek Anderson (11 of 19, 92 yards, 3 INTs) did not perform much better.

Based on the above article, answer a question. How many more yards was Willis McGahee's second touchdown run over his first?
8