The Tigers’ late-summer charge back into the American League playoff race has come with the benefit of health, but they might have to worry about All-Star left fielder Riley Greene, who exited Tuesday’s 6-4 win over the Guardians after taking a pitch off his lower right leg.

Unfortunately, hamstring strains are both common and painful. They strike athletes of all sorts – including runners, skaters, and football, soccer, and basketball players. But what is a hamstring? It isn't actually a single ”string.” It's a group of ...