The Cavs released this statement about LeBron James' injured finger:
"Cavaliers forward LeBron James experienced a sprained left index finger late in the second quarter of the Cavaliers game against the Detroit Pistons last night. He did not return to the game after half-time. X-rays taken at the arena were negative and he traveled with the team to Toronto after the game. LeBron underwent a MRI today at Cleveland Clinic Toronto which confirmed the sprain. He is currently listed as day to day and will be a game time decision for tomorrow night’s game in Toronto against the Raptors."
Overall, it is good news for the team because there was concern there could be something more serious in there. It takes a lot to keep James out of the lineup, but I expect the Cavs to be very cautious with this injury. They won't want him to re-injure it so quickly. At the very least, though, this is the type of injury that can linger for weeks. That is nothing new, James plays with nagging stuff all the time.