OAKLAND -- The A's lost another starting pitcher to an injury, then saw their bullpen battered like a piñata in a 16-2 loss Friday night to open their weekend series against the Boston Red Sox at the Coliseum.
Andrew Triggs pitched the first inning, giving up an unearned run, then had to leave because of a bad back. Zach Neal took over and gave up an unearned run of his own over the course of the next three innings.In the fifth and sixth innings, however, the Red Sox scored 10 times to put the game well out of reach. David Ortiz, at 40 making his last swing through Oakland before retiring, drove in three runs with a couple of singles and a sacrifice fly.Ortiz has 105 RBI with a month left in…