What is chip kelly?

Here's some information about Chip Kelly, formatted in Markdown with links:

Chip Kelly is an American football coach. He is currently the head football coach at UCLA.

Kelly gained significant recognition for his innovative and fast-paced offense, particularly during his time as the head coach at the University of Oregon. His success at Oregon led to a stint in the NFL as the head coach of the Philadelphia Eagles. His time in the NFL was characterized by roster control and personnel decisions, in addition to his offensive strategies. After being fired by the Eagles, he served as the head coach of the San Francisco 49ers for one season before returning to college football.

Kelly's coaching philosophy is known for its emphasis on up-tempo, no-huddle offenses that put pressure on opposing defenses. He has also been noted for his innovative use of sports science and data analytics in his coaching approach.