Somewhere in a newspaper morgue, or tucked away in the netherreaches of the Internet, is evidence that the Giants have played a home game in2011. Actually, they have played nine, so tonight's game againstColorado only will seem like the home opener. Thursday's 5-2 loss to the Mets, featuring another JonathanSanchez meltdown, ended a season-opening stretch that the Giants knew would challenge them.They played 22 of their first 31 games on the road and went 15-16,not awful given their injuries and an offense on hiatus.