Live Betting - San Francisco Giants vs Seattle Mariners February 21, 2026

The Seattle Mariners are favored in this spring training matchup with their stronger projected 2026 season outlook. The Mariners finished 2025 with a 90-72 record and are projected to win 89.5 games in 2026, while the Giants have struggled to exceed 81 wins in each of the last four seasons and lack a top-of-the-rotation starter after replacing Justin Verlander. With DexWin - Best Odds on Your Favourite Sports, you can find competitive odds reflecting Seattle's superior roster depth and pitching staff rebound expectations.

The match starts at 8:10 PM on February 21, 2026 in Pacific Standard Time (PST), during the early stages of MLB spring training when teams are evaluating roster composition and player performance ahead of the regular season.

The venue for this spring training game is located in Arizona, where MLB teams conduct their preseason training and exhibition matches during February and March before the regular season begins on March 25, 2026.

The Seattle Mariners enter spring training as the division favorites with +125 odds to win the AL West, supported by their ninth-ranked offense and expected pitching staff rebound from an 18th-ranked ERA in 2025. The Giants project at 37.5% playoff odds with uncertainty behind their rotation and a bullpen lacking a surefire closer, making Seattle the clear spring training favorite in this exhibition contest.

Specific head-to-head records between the Giants and Mariners for recent seasons are not detailed in current spring training coverage, but the Mariners' superior 2025 regular season record (90-72 versus San Francisco's projected 79-81 range) and stronger 2026 projections indicate Seattle's competitive advantage heading into this spring training exhibition.