A team with pitchers potentially for sale encounters a club that could be in the market for dependable arms when the San Francisco Giants open baseball's second half Friday night against the host Milwaukee Brewers. Both teams ended the first half on the outside of the playoff picture, with the Brewers (47-44) a half-game behind the Chicago Cubs in the National League Central as well as Philadelphia for the National League's second wild-card spot, while the Giants (41-48), the last-place team in the NL West, are 5 1/2 games back. The Giants played arguably their best ball of the season in the week leading into the All-Star break, going 5-1 with a three-game sweep of San Diego before taking two of three from St. Louis.