Is this a sentence or fragment Running down the street as fast as possible and coming to a stop in front of the store?

'Running down the street as fast as possible and coming to a stop in front of the store' is a sentence fragment because it has no subject + verb.

Running down the street as fast as possible and coming to a stop in front of the store, I was breathless when I entered the store.

Running down the street as fast as possible and coming to a stop in front of the store, John yelled to his father inside the store.