Spinks was noted in 1912 for a still-unbroken world record at 18.2 balkline, a of 1,010 continuous points, using the "" (a form of ); he could have made more, but stopped. Later, rules were instituted especially to curtail the effectiveness of the chuck nurse. The use of such repetitive, predictable shots by Spinks, Schaefer Sr., and their contemporaries led to the development of the more advanced and restrictive 14.1 balkline rules (invented in 1907, but not played professionally until 1914), which thwarted the ease of reliance on nurse shots even further than the older balkline games already did.
