Brendan Donovan -- Trade Rumors
Trade Rumors sources for Brendan Donovan of the Seattle Mariners
The Seattle Mariners acquired infielder Brendan Donovan from the St. Louis Cardinals in a three-team trade completed February 2, 2026. The Cardinals, under new baseball operations leadership, sent Donovan to Seattle while the Tampa Bay Rays received pitcher Ben Williamson, with prospects and draft picks flowing to St. Louis. Donovan represents the highest-value asset involved in the transaction.
Donovan's profile combines elite plate discipline with offensive production and positional flexibility. His 2025 season featured a 25% chase rate on pitches outside the strike zone (70th percentile) and a 95th-percentile contact rate, producing a 119 wRC+. His batting approach resembles Steven Kwan's selective eye combined with stronger bat speed and power generation. Donovan's career 42.4% hard-hit rate and 96th-percentile squared-up rate indicate above-average power production despite his contact-focused approach.
Defensively, Donovan provides versatile coverage across multiple positions. The Mariners acquire him on a favorable contract: $5.8 million in 2026 with one remaining arbitration year in 2027, providing two additional years of team control. His combination of offensive production, defensive flexibility, and cost-controlled status makes him a significant addition to Seattle's roster.