Over the course of the past year, Ms. Stern and Ms. Sundberg interviewed dozens of people around the game, including past and current players.

WSJ: New Spin on Oddball Pitch

Gary Campbell, president of the official loch Ness monster fan club, said Mr Sundberg could be in trouble if any of the creatures were harmed.

BBC: Storm hits Nessie 'fishing' plan

Mr Sundberg says Loch Ness is home to up to 60 families of monsters, and maintains his global underwater research team has no desire to hurt any creature.

BBC: Storm hits Nessie 'fishing' plan

For Ms. Stern and Ms. Sundberg, the challenge was getting the two pitchers to open up at times when it would have been easier for them not to.

WSJ: New Spin on Oddball Pitch

The film will no doubt pique the interest of baseball fans in New York and Boston, but co-directors Ricki Stern and Annie Sundberg believe it will have a broader appeal.

WSJ: New Spin on Oddball Pitch