SportsPulse: USA TODAY Sports’ Bob Nightengale discusses MLB’s most iconic rivalry.

BOSTON – It’s certainly not worth celebrating, but Major League Baseball has at least made back the loss of African American players that a year ago resulted in a historic low.

The African-American population increased to 7.8%, up from 7.1% a year ago, on Major League Baseball’s opening-day day rosters and disabled lists, according to USA TODAY Sports’ annual study.

It may not look like a significant increase, but it happens to be baseball’s largest growth since 2007-2008.

There are 68 African Americans on rosters, six more than a…