What happened: Jon Morosi credited the St. Petersburg baserunning play to the multi-sport foundation the former Boston College standout built at Lexington High School in Massachusetts. Before focusing on baseball in college, Frelick played prep quarterback, defensive back, and varsity hockey.

Why it matters: Entering Tuesday with a 3-0 World Series advantage, the club has treated every postseason outing like an elimination test rather than coasting on its margin. Manufacturing a tying run with speed on the bases keeps pressure on the opposing defense with a championship clincher within reach.

What to watch: The remainder of Game 4 determines whether the series ends in a four-game sweep Tuesday night or extends to a Game 5.