Starting Warriors center DeMarcus Cousins' postseason could be in jeopardy after he injured his left quadriceps muscle in the first quarter of Monday night's 135-131 Game 2 loss to the Los Angeles Clippers in the first round of the playoffs. ''There's a pretty significant quad injury,'' coach Steve Kerr said. This is a terrible blow for Cousins in just his second career playoff game following a nine-year wait.