The starting pitching market has seen significant movement as teams prepare for the 2025 MLB season. Notable players including Corbin Burnes, Max Fried, Sean Manaea, and several top pitchers were still free agents when initial predictions were published. As of now, available impactful starters in free agency include Jack Flaherty, Nick Pivetta, Andrew Heaney, Max Scherzer, Kyle Gibson, José Quintana, and Lance Lynn. Also noteworthy is the presence of Roki Sasaki, a star from the Japanese League, who might significantly impact teams in 2025. In the following predictions, the top remaining free agents have been assigned to logical landing spots, setting the stage for each MLB team's Opening Day starting rotation. This will be updated throughout the offseason, allowing for potential changes and adjustments.

The Arizona Diamondbacks' projected rotation features Corbin Burnes, Zac Gallen, Merrill Kelly, Eduardo Rodriguez, and Brandon Pfaadt. The Diamondbacks made headlines by signing Burnes to a six-year, $210 million deal, pairing him with Gallen to create a formidable one-two punch. Jordan Montgomery and Ryne Nelson could find themselves on the outside looking in as the team is unlikely to expand to a six-man rotation. The depth of the pitching staff may turn Montgomery into an expensive long reliever given his $22.5 million salary.

The Oakland Athletics' projected rotation includes Luis Severino, Jeffrey Springs, Andrew Heaney, JP Sears, and Joey Estes. The addition of Severino and Springs significantly bolsters a rotation that previously struggled with a 4.76 ERA in 2024. The team may pursue at least one more veteran arm to further strengthen their lineup. Additionally, Heaney's previous contracts suggest he could be a budget-friendly option given the potential for a similar deal as his prior two-year, $25 million contract with the Rangers.