was divided into rectangular balk spaces, by drawing balklines lengthwise and widthwise across the length of the table a set distance parallel out from each rail. The use of such balklines was first proposed in 1875 but was rejected. However, because high runs once again increased as skill compensated for the new conditions, in 1883 the balklines were accepted, replacing the champion's game in tournament play. A variety of distances and count restrictions have been used.

Balklines did not end the use of the rail nurse but they did restrict