White Sox Sign Seranthony Domínguez to 2-Year Deal as New Closer

The Chicago White Sox signed Seranthony Domínguez to a two-year, $20 million deal, naming him their closer. Coming off a strong 2025 season with a 3.16 ERA and 11.9 K/9 in 67 games, Domínguez has pitched 50+ innings for four consecutive seasons since Tommy John surgery. His 97.7 mph fastball and new splitter/sweeper generated high whiff rates (33.3% whiff, 30.3% K), though also a 5.6% walk rate. The move is seen as a low-risk, high-reward acquisition to bolster the bullpen.