Here is a comprehensive summary of the article:

The inaugural 2015 College Football Playoff National Championship was held on January 12, 2015, at AT&T Stadium in Arlington, Texas, marking the first title game under the new four-team playoff system that replaced the BCS. The matchup featured the No. 2 Oregon Ducks against the No. 4 Ohio State Buckeyes, who had earned their spots by winning the Rose Bowl and Sugar Bowl semifinals, respectively. Ohio State claimed a decisive 42–20 victory, securing their first national championship since 2002 and their 8th overall, while also becoming the first champion of the CFP era. Notably, this was the first title game since 2006 without an SEC team, and it was a rematch of the 2010 Rose Bowl, which the Buckeyes had also won. The event was highly commercialized, with 30-second ads costing over $1 million, and featured a memorable pregame moment when a student carrying the American flag tripped during Lady Antebellum's national anthem performance. The game took place at the 80,000-capacity AT&T Stadium, which had been announced as the host site in April 2013, with Dr Pepper serving as the presenting sponsor of the championship trophy.