But many big leaguers believe in absolute space, and so it doesn't always work; in Tuesday's victory over the Royals, Ellsbury, enamored of his speediness, was thrown out trying to score from second Jake Taylor/Willie Mays Hayes style on an infield hit to third, 5-3-2.
In other parts of the universe, though, the principle of relative motion held. In the 7th, Bay's drive bounced off Royals' centerfielder Mitch Maier's glove and sat atop the leftcenterfield fence. The earth then moved quickly under it, making the ball appear to roll along the top of the fence towards leftfielder Ross Gload, who leaped and knocked the ball back onto the yet again relatively stationary earth.
Some things aren't relative, of course. Like the Sox runners orbiting the bases 8 times, to KC's 2.