"Fever Pitch" is a sweet and charming addition to the small genre of sports romances as date movies or movies a son could be willing to go to with his mother (though the guys in the audience got noticeably restless during the romantic scenes).
I have lived through a milder version of such a story, as my first exposure to baseball was dating my husband the spring after the Mets first World Series win and then I watched the Mets clinch their next one because I was the one still up in the wee hours with our two little sons, who have grown up to teach me more about baseball through our local neighborhood National League team's other heartbreaking failures to win it again (and it was me who took our older son to his only Fenway Park game as I caught a bit of Red Sox fever as a graduate student in Boston).
So compared to reality, the script believably creates two people with actual jobs. It is particularly impressive that Drew Barrymore's character is a substantive workaholic who has anti-Barbie skills, though she pretty much only visits with her three bland girlfriends during gym workouts that allow for much jiggling and the minor side stories with her parents don't completely work.
It is even set up credibly how she meets Jimmy Fallon's math teacher and how she falls for his "winter guy" -- though it's surprising that his Red Sox paraphernalia filled apartment didn't tip her off to his Jekyll-and-Hyde "summer guy." Their relationship crisis during the baseball season is also played out in a refreshingly grown-up way, from efforts at compromise to her frank challenges to him, centered around that they are both facing thirty and single. Fallon surprisingly rises to his character's gradual emotional maturity.
While the ending borrows heavily from O. Henry, the script writers did a yeoman job of quickly incorporating the Sox's incredible 2004 season into a revised story line (with lots of cooperation from the Red Sox organization for filming at the stadium).
The script goes out of its way to explain why Fallon doesn't have a Boston accent, as an immigrant from New Jersey, but that doesn't explain why his motley friends don't. The most authentic sounding Boston sounds come from most of his "summer family" of other season ticket holders, who kindly kibitz the basics of Sox lore to neophyte Barrymore (and any such audience members).
The song selection includes many Red Sox fans' favorites, from the opening notes of the classic "Dirty Water," though most are held to be heard over the closing credits as if you are listening to local radio and are worth sitting through to hear.

what a preposterous story ,murder blackmail,child sex allegations ,gays and the catholic church.....absolute tripe. How is it that most UK based TV dramas ,sit coms etc have to include the obligortory Gay,its really getting tiresome now. Everybody accepts that there are Gay people in society just has there are other minority groups,but we don't want it ramming down our throats(i'll pass on this one) in every single show. Apart from the above, the drama went from what could have been an interesting little story into a pantomime,the priest was a paedophile and there are gays running about every where,oh yes just to be totally PC one of the gay couple was black.i am surprised at c ecclestone for even contemplating this when he read the script.