The Boston Red Sox are riding a six-game winning streak, but face a daunting challenge against the Seattle Mariners, particularly Bryan Woo, who previously struck out eight batters against them in April. With both teams in action, key MLB prop bets highlight Gleyber Torres, who is thriving on a one-year contract with the Detroit Tigers, especially against left-handed pitching. Betting against Bailey Falter, the Pirates' southpaw with a strong ERA, seems risky. Ronald Acuña Jr. also remains a focal point, aiming to extend his impressive performance against division rivals. Notably, Woo's consistency as a pitcher and his low walk rate suggest he will likely exceed 18.5 outs against the Red Sox.