We owe a debt of gratitude to the original nflscrapR team, Maksim Horowitz, Ronald Yurko, and Samuel Ventura, without whose contributions and inspiration this package would not exist.
Includes a function update_db() that creates and updates a database. 
Features models for Expected Points, Win Probability, Completion Probability, and Yards After the Catch (see section below). Hosts a repository of play-by-play data going back to 1999 for very quick access. 
Includes series information, including series number and series success. Includes drive information, including drive starting position and drive result. Includes completion probability ( cp), completion percentage over expected ( cpoe), and expected yards after the catch ( xyac_epa and xyac_mean_yardage) in play-by-play going back to 2006. As suggested by the package name, it obtains games much faster. The package contains NFL play-by-play data back to 1999. nflfastR expands upon the features of nflscrapR: "Stones has the quality to pass the ball and he can arrive into the attacking positions to control the play.NflfastR is a set of functions to efficiently scrape NFL play-by-play data. He's played so well lately and has given the opportunity to play in this certain way. He plays the big games like they are friendlies, he can cope with the pressure." The skills are there but he also had the mentality. On Ilkay Gundogan: "What a season he has had. I know today we gave our fans a good gift to enjoy against our neighbours." "I'm a Barcelona fan but I will love this club for the rest of my life. We'll travel on Thursday morning after training. We've then got three or four sessions to train for Inter Milan. "Tomorrow and the next day they can have off. "They follow man to man so tight and we didn't expect them to defend so narrow. We performed so well for our city and our fans. 
Of course we still have to win the Champions League. Manchester City manager Pep Guardiola, speaking to BBC One: "We can now talk about the Treble.
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