It might be too late for a playoff push, but San Francisco Giants manager Bob Melvin hopes his team can continue its impressive recent form when it goes for a second straight home win over the Chicago Cubs on Wednesday night. On a day that started with bad news, the Giants enjoyed a game Melvin noted “just had a good feel for it” in opening the three-game series with a 5-2 win over the National League Central contender. The Cubs will take the field Wednesday as the NL wild-card leader, 8 1/2 games ahead of the closest current non-qualifier, the Cincinnati Reds. The Giants are another 3 1/2 games behind the Reds.