Turn Over Meaning

(transitive, sports) To give up control (of the ball and thus the ability to score).

Example: Used other than as an idiom: see turn,‎ over.
To flip over; to rotate uppermost to bottom.
  Turn over the box and look at the bottom.
  They turned over the evidence to the authorities.
1843, Thomas Carlyle, Past and Present, book 3, ch. IX, Working Aristocracy
  But what is to be done with our manufacturing population […] This one thing, of doing for them by ‘underselling all people,’ and filling our own bursten pockets and appetites by the road; and turning over all care for any ‘population,’ or human or divine consideration except cash only, to the winds, with a “Laissez-faire” and the rest of it: this is evidently not the thing.
  They can turn over about three hundred units per hour.
1883, Howard Pyle, The Merry Adventures of Robin Hood Chapter V
  Thus they dwelled for nearly a year, and in that time Robin Hood often turned over in his mind many means of making an even score with the Sheriff
  The Giants didn't turn the ball over in their last four games.