I didn't even realize this wasn't my first Sarah Castille book until I was halfway through Yield to Me. So I guess that means I'm a fan of her work. However, though I liked this book, I actually prefer the Legal Heat series to this. But it could be because this was a novella and Legal Heat are full-length. *shrugs*
The good stuff: I enjoyed the writing and the plot. A female MMA fighter falls for a former MMA fighter now turned coach. HER coach. Great plot. Read so many books about damsels in distress that this was a nice diversion from that. Marcy was no damsel in distress, though she did need some help with her fighting technique and that's what Jax was there for. I liked to see the struggle of keeping it professional between them when they were clearly attracted to one another. That's always fun. The romance scenes were pretty good too and there was an element of BDSM as well. Again, always fun. I also liked the scenes when Marcy competed even when she lost. They were very well written and added some action to the book.
The "OK" stuff: It's the problem with most novellas. Little to no character development. Though I was fond of Marcy and Jax, they weren't developed enough. We didn't know their situation before this book (not really) nor what might transpire between them in the future. It was only right now. Their history of relationship and family problems are mentioned but never fully explored. I think if I knew more about their pasts I would have liked them even more, and with that, would have like the story a bit more and rated it higher.
Can't really say anything BAD about the book. It didn't have "bad" points, just okay ones. It's worth a read if you're into MMA fighters (yeah, who isn't?) and Romance. It's short so it won't take you a very long time to read and isn't that cover kind of hot?