MIAMI Heat forward Chris Bosh is out indefinitely after an MRI revealed a strained abdominal muscle, the team announced overnight. Bosh was injured in the first half of yesterday\'s 95-86 win over the Indiana Pacers in Game 1 of the Eastern Conference Semifinals. Bosh, who was off to a great start with 13 points and five rebounds, was hurt with a minute left in the first half when he drove past Pacers centre Roy Hibbert for a dunk and fell to the floor. He stayed down in obvious discomfort before making a free throw. The 28-year-old was replaced shortly thereafter and did not return. The team has not provided a timetable for when the seven-time All-Star will be able to return. Bosh is averaging 14.7 points and 6.8 rebounds in the team\'s first six postseason games. Game 2 of the best-of-seven series will be tomorrow in Miami