Assorted thoughts on the morning of the Giants' momentous four-game serieswith the Phillies: -- Most impressive thing about Carlos Beltran so far: his speed.He's had serious problems with both knees in the past, but helooked spry and free-flowing on the bases during his three-hit gameagainst Arizona on Wednesday. That makes him a complete ballplayer,still, as he joins San Francisco for the pennant race.