As close as they might come, as hard as they might play and as well as they might shoot, the Cavaliers still do not have their Mr. Fourth Quarter. They are without All-Star Kyrie Irving, the point guard who sat at home as his Cava liers took on the San Antonio Spurs on Saturday night at the AT&T Center. And without him, they lack a closer, someone who can pull Cleveland through a close game. So while the Cavaliers came close Saturday night, they predictably stumbled in the end, again, falling 119-113 to the Spurs. The Cavaliers (22-44) lost their second straight, and have lost six of their past eight.