Abstract: A system for practicing golf is disclosed. The system includes a golf tee holder, a lie modifying wedge, a lie modifying sheet, and a lie modifying bag. The golf tee holder is a small, rubber component placed under a driving range mat, which holds a real golf tee at an adjustable height. The lie-modifying wedge is foam wedge that is placed under or on top of the driving range mat to manipulate the lie of the golf ball on the driving range mat amongst uphill, downhill, and side-hill lies. The lie-modifying sheet and lie-modifying bag are relatively flat components places on top of and anchored to the driving range mat and used as surfaces from which to hit golf balls from different materials simulating hazards on a golf course, such as long grass, a hard pan lie, and a sand trap.