For the fourth time in what is now a six-game winning streak, the Dodgers scored the winning run in their last at-bat, this time on a bloop single by Matt Kemp in the ninth that fell near the line in right field and allowed Rafael Furcal to score. The Dodgers scored another on a freak play later in the inning, but that was moot. Saito dominated in the bottom of the ninth, and the Dodgers had their second sweep in a row. They move to 15-13 and within five games of the idle Snakes in the NL West. … The Juan Castro sweepstakes — he became a free agent at 10 this morning — are down to the Dodgers, Padres, Orioles and Rockies, who joined the fray when they lost Troy Tulowitzki, probably for two to three months, with a torn quadriceps tendon he suffered trying to make a play on Wednesday night. Dodgers and Rockies both want Castro to go to Triple-A for a few days because he hasn’t played in 10 days and he got only 10 at-bats with the Reds. Padres, from what I understand, are willing to put him on the big-league roster now.