Absolutely. I have a couple of sports apps [0] that use both scraped web data and a hidden API to get realtime baseball game information. One of them won a sports hackathon a couple years ago (sports radar was a sponsor).
From what I recall, sports radar is really expensive because they have people manually entering data all the time. If you could find a happy medium where your data is close to real-time but doesn't require a lot of manual work, you could keep your costs low and prices affordable for small app developers.
I'd suggest targeting mobile developers and not just fantasy/daily fantasy. I'd love to work some more up-to-date questions in my sports trivia app. Example: "What had the most rebounds in Warriors/Cavs game 1?"
[0]
https://itunes.apple.com/us/app/hat-trick-daily-sports-trivi...
https://itunes.apple.com/us/app/on-deck-baseball-alerts/id91...