The nickname “Hellboy" suited the pitcher whose arrival in St. Petersburg seemed almost mystical. Drafted in the fourth round of the 2005 amateur draft, Jeremy Hellickson not only met the high expectations of the Rays' pitching development program but may have been its most refined early success story. He initially showcased his talent during a brief 2010 debut, securing all four of his decisions and offering a glimpse of his calm, changeup-oriented pitch style that would soon challenge American League hitters.

His rookie season in 2011 showcased controlled mastery. Unlike some young players who depend on sheer, uncontrolled speed, Hellickson pitched with veteran-like precision. He solidified the team's rotation, finishing with a 13–10 record and a remarkable 2.95 ERA. His performance earned him the American League Jackie Robinson Rookie of the Year Award, making him just the second Ray to receive this honor after Evan Longoria.

Hellickson’s role in the rotation remained pivotal through 2012, when he received a Gold Glove Award for his defensive skills on the mound—highlighting his high baseball IQ. Yet, in 2013, his command noticeably declined, and his ERA increased to 5.17, indicating a tough transition for the once-reliable ace. Injuries then impacted his 2014 season, restricting him to 13 starts, before the organization decided to move on, trading him to the Arizona Diamondbacks that offseason.

With the Rays, Hellickson made 97 appearances (94 starts). He compiled a 40–36 record with a 3.73 ERA and a 1.20 WHIP, logging 540.1 innings and registering 463 strikeouts.

Alex Colomé’s progression within the Tampa Bay organization exemplifies exemplary organizational adaptability. Signed from the Dominican Republic as an 18-year-old amateur free agent in 2007, the right-handed power pitcher was extensively trained as a conventional starting pitcher. When he ultimately secured spots on the major league roster for brief trials in 2013 and 2014, he did so as a central pitcher, demonstrating a high-velocity fastball that suggested a promising future, despite his precise role remaining uncertain.

That significant breakthrough occurred in 2015 when the front office employed him as a versatile swingman. Colomé pitched a total of 109.2 innings over 43 appearances, including 13 starts, achieving a record of 8–5. While his performance in this role was adequate, an injury to closer Brad Boxberger during spring training prior to the 2016 season compelled Kevin Cash to adapt. Colomé was consequently positioned into the ninth-inning role, where he immediately altered the entire dynamic of the Tampa Bay bullpen.

Utilizing a formidable and incisive cutter, Colomé established himself as an exceptional force in the closing role. Throughout the 2016 season, he demonstrated dominance over American League batters, securing 37 saves with an outstanding 1.91 ERA and earning his inaugural selection to the All-Star Game. His significant breakout was reaffirmed in 2017 when he resumed his role as a reliable bullpen staple. Although his ERA increased modestly to a solid 3.24, his consistency in high-pressure situations reached its zenith as he successfully closed the game 47 times, leading Major League Baseball and setting a franchise record as the first pitcher to claim the title of Major League saves leader.

As his salary escalated in arbitration, the hyper-efficient Rays front office capitalized on his massive market value, trading the veteran closer to the Seattle Mariners in May 2018. With the Rays, Colomé appeared in 191 games (19 starts). He compiled a 17–15 record with 95 saves, a 3.14 ERA, and a 1.22 WHIP, registering 255 strikeouts over 273 innings pitched.