Hi Bill , good question , and you've got some good answers from previous posts. Here are some things supers do to negate the effect of grain : 1) lower and more frequent mowing ( less leaf equals less deflection on ball 2) verticutting ( removes lateral shoot growth and promotes more upright growth of leaf 3) light topdressing ( promotes upright growth ) 4) multi-directional mowing ( each direction of mower pushes leaf to new direction and allowes for more leaf to be removed ) 5) "reverse " brushing and dragging ( picks leaf blades up to allow for cleaner mowing and promotes upright growth) 6) fertility management ( "leaning-out" fert. ,particually nitrogen , reduces growth . Less growth equates to less grass influencing ball roll and minimalizes differences of speed and grain from early morning to late afternoon . Many supts. want turf completley "out" of N. come tourney time ! 7) Irrigation ( drier leaf blades are "weaker" and therefore offer less resistance ) Interestingly though , a little water applied 1 or 2 hours ahead of mowing will cause the grass to "perk-up" just enough to facilitate a more upright growth and cleaner mowing . Now if I may say something concerning mis-conceptions about grain . 1) Bent can be "grainer" than Bermuda , it all depends on the cultural factors employed ! 2) THE GREASTEST factor affecting grain is GRAVITY !! Grass will grow in several directions on multi-tiered , humped , or rolling greens . On mountain or seaside courses , the ball always goes downhill or toward the ocean gecause of GRAVITY . The grass grows in that direction also because of GRAVITY . Courses built "into" the "natural terrain" with existing water features will tend to slope towards these features because that is where the surrounding land drains ( again , GRAVITY ) Artifically constructed water features may/or may not have anything to do with the overall lay of the land , and ergo may/ or may not influence ball roll or grain . Salem comment : WOW ! Just wish T.V. could do justice to those Ross green contours . And by the way , those green speeds appear to be " wicked" going downhill . Any faster and/or firmer would be boarder line un-playable . Cheers , geo