Aroldis Chapman's Resurgent 2025 Season Earns Red Sox Extension, Top 2026 Closer Ranking

Aroldis Chapman, the 37-year-old left-handed veteran, had a remarkable 16th MLB season in 2025, potentially his best yet, emerging as the Boston Red Sox's primary closer despite initial ambiguity. He posted elite statistics, including a 1.17 ERA, 0.70 WHIP, 85 strikeouts, and 32 saves across 61 1/3 innings. Chapman maintained a 98.5 mph fastball velocity, generated an elite whiff rate, and showcased career-best control with a 6.6% walk rate. His outstanding performance made him an incredible value in 2025 and led to the Red Sox rewarding him with a one-year, $13.3 million contract extension for the 2026 season. Chapman is ranked as the fourth-best closer for 2026.