11.   The Celtics know how quickly momentum can swing in the postseason and remain confident they can create problems for the Nets with better execution at both ends.

12.   The momentum swung back and forth in overtime.

13.   The momentum swung over with a loud clunk.

14.   The way the momentum swung from the second quarter into the third was hauntingly familiar for the Heat.

15.   There were no critical turning points, no huge momentum swings.

16.   With the series tied, the momentum could have swung either way.

17.   You could feel the momentum swing to the Oakland sideline.

18.   And he knew the Americans could pull off an unlikely comeback if they could see the momentum swing strongly in their favor from the first six matches Sunday.

19.   But the momentum swung wildly throughout.

20.   Momentum swung right around in the early afternoon.