Our rivalry formed long before we became siblings.  Madden Hastings has been my nemesis since the day we met. A divide was born from the age-old rivalry between our universities, but this year, another layer developed. It became personal. Because the captain of Blackmore's baseball team?He's also my new step brother. My disdain for the sudden blending of our families leads to more conflict, and despite their efforts to force us together, coexisting proves impossible. But something else starts burning beneath my bitterness and resentment;an attraction as unexpected as it is potent. And when the chemistry becomes too powerful to deny, our already complicated relationship gets even messier. Because a forbidden fling is one thing, but falling for the enemy?It forces me into a choice I never wanted to make. One between loyalty to my team, or the love of my life.  *Playing Dirty is the fourth in a five book standalone college sports romance series featuring two rivalry-fueled step brothers, a cut-throat game of capture the flag, and sexual tension that oozes off the page. Not suitable for anyone under 18 years of age. *