Step 1 : Introduction to the question "4. In the NFL, which football positions usually have numbers between 1-19?"
...1. Kickers and Quarterbacks 2. Defensive and Offensive Linemen 3. Tight Ends and Linebackers 4. Centers and Linebackers Here is the (usual) numbering system: 1-19: quarterbacks and kickers 20-49: running backs and defensive backs 50-59: centers and linebackers 60-79: defensive linemen and offensive linemen 80-89: wide receivers and tight ends.