Isaiah is the 28-year-old shortstop for the Windy City Warriors. He projects a fun-loving, carefree persona to his teammates, masking his deep-seated anxiety and lingering grief over his mother's death. He has harbored a secret crush on Kennedy for two years and uses their accidental Las Vegas wedding as an opportunity to win her heart.

Kennedy is a highly qualified medical doctor working as an athletic trainer for the Windy City Warriors due to industry sexism. She is fiercely independent and emotionally guarded because of her cold family background. Following a drunken night in Las Vegas, she finds herself unexpectedly married to Isaiah and must maintain the ruse to protect her career prospects.

Kai is the pitcher for the Windy City Warriors and Isaiah's older brother. Following their mother's tragic death, Kai stepped into a parental role, prioritizing Isaiah's well-being over his own comfort. He is a grounded, steady man focusing on building a stable home with his fiancée and young son.

Dr. Frederick is the head physician for the Windy City Warriors. He harbors deeply misogynistic views, actively undermining Kennedy by assigning her menial tasks and threatening her career. He uses his authority to create a hostile work environment and resents anyone challenging his control.

Reese is the granddaughter of the team's current owner. She is poised to take over the management of the baseball franchise. As a woman entering a male-dominated executive space, she brings a no-nonsense attitude and a critical eye toward the existing staff dynamics and workplace culture.

Dean is a second baseman for an Atlanta baseball team and Kennedy's step-brother. Coming from the same wealthy, emotionally stunted family, he rejected their business expectations in favor of sports. He holds a long-standing rivalry with Isaiah that dates back to their high school days.

Miller is a talented pastry chef engaged to Kai Rhodes. She acts as a maternal figure to Kai's son and frequently hosts the baseball team at her home. She integrates Kennedy into their tight-knit social circle, offering her genuine friendship and support.

Emmett, widely known as "Monty," is the field manager for the Windy City Warriors. He serves as a steady, guiding father figure to both Isaiah and Kai. He balances his professional responsibilities with his genuine care for the players' personal lives.

Arthur is the retiring owner of the Windy City Warriors. He values the public image of his franchise and strictly enforces employee conduct contracts.

Connor is Kennedy's former fiancé. Their relationship was largely a business arrangement orchestrated by her parents. He is now engaged to Kennedy's step-sister and continues to involve himself in Kennedy's life by sending harassing text messages.

Mallory is Kennedy's step-sister. She frequently attempts to provoke Kennedy by flaunting her relationship with Connor, showing a desperate need for attention and superiority.

Jennifer is Kennedy's mother. She prioritizes wealth, status, and appearances over emotional warmth, heavily pressuring her daughter to make socially advantageous decisions.

Cody is a player for the Windy City Warriors. He is a lighthearted, loyal member of Isaiah's inner circle who frequently joins him for outings and team celebrations.

Travis is a player for the Windy City Warriors. He acts as a supportive friend to Isaiah and is one of the few people who knows the truth about Isaiah's sudden marriage.

Max is Kai's young son. He brings joy to the Rhodes family and easily accepts Kennedy into their lives, helping her experience familial warmth.

Josh works for the San Francisco baseball team. He connects with Kennedy to show her the state-of-the-art facility during her job interview, offering a glimpse of a different professional environment.