Maybe all Carlos Beltran needed was for the calendar to turn toSeptember. After hitting a soft .300 in August, Beltran enjoyed his bestgame in orange and black on Friday night, helping the Giantssurvive another day with a 6-2 victory over the first-place Diamondbacks . To begin the Giants' biggest series of the year - manager BruceBochy said, "They're all must-win games. There's not a very bigmargin for error" - Beltran did what he was supposed to do whenacquired July 28 from the Mets.