MIAMI -- Miami Heat forward Chris Bosh was observed going through an on-court workout at AmericanAirlines Arena late Sunday afternoon in what could be the most significant step he's taken in recovering from an abdominal strain that's sidelined him for two weeks.

The team still considers Bosh "out indefinitely" as the Eastern Conference finals get underway against Boston. Bosh has been out since May 13, when he sustained the injury in the first half of Game 1 against the Indiana Pacers in the conference semifinals.

Bosh went through Sunday's workout with Heat assistant coach Keith Askins on the main court at AmericanAirlines Arena, with the sessions attended by team president Pat Riley. Bosh was seen going through drills that included catching and turning with the ball. He also did some work on his lateral movement across the court in addition to shooting free throws.

Bosh was not present on the practice court at the arena when the Heat wrapped up a workout earlier Sunday afternoon in preparation for Game 1. Heat coach Erik Spoelstra told reporters after practice that there was no change in Bosh's status, and that he was preparing to be without the perennial All-Star forward going into the series opener.

"I'm not even preparing for that right now," Spoelstra said earlier Sunday when asked about Bosh's status for the series. "I'm preparing for who we have in the gym. So our focus is (Monday). And that's all I can concentrate on. We have enough to win (Monday). That's all that any of our guys should be focused on."