The Washington Post:
Chang committed 27 unforced errors, to 68 for Edberg. He connected on 82 percent of his first serves, to 58 percent for the Swede. Chang converted seven of his 17 break points, with Edberg six of 26.
The Worcester Telegram Gazette, on the other hand, has Edberg 6-25 in break points.
Moose, your service percentage for Edberg is 11 points higher than the Post, but your number of total serves for Edberg, by set, actually add up to 135. That would bring it down 11 points.