Miami Heat forward Chris Bosh has been sidelined indefinitely with a strained abdominal muscle, the NBA team announced on Monday after the results of an MRI exam were examined. Bosh suffered the injury in the second quarter of Miami\'s 95-86 playoff victory over visiting Indiana on Sunday in the opener of their best-of-seven Eastern Conference second-round series. The team announced Bosh\'s status in a Twitter posting and also posted a note from NBA Most Valuable Player LeBron James about losing his key team-mate to the injury. \"The best thing about our team is that we have guys that stay ready,\" James said. \"When someone goes down we have someone to step up.\" In this case, James figures to be the man who must step up. James will likely see more time at power forward in Bosh\'s absence, with the pressure on James and guard Dwyane Wade to ignite a scoring spark for the Heat. Bosh, who had 13 points on Sunday, slammed down a dunk 66 seconds before half-time but landed awkwardly on the court, left the game after making two free throws and did not return. \"It is unfortunate Chris went down,\" Wade said. \"For me, I just had to turn it on and be more aggressive.\" The Heat are the top remaining seed in the East playoffs after the first-round ouster of Chicago by bottom-seed Philadelphia. The Bulls were undone after losing playmaker Derrick Rose, last season\'s NBA Most Valuable Player, to an injury in their playoff opener.