After winning three tournaments on the Nationwide Tour in 1992, he joined the PGA Tour in 1993. Henninger's first PGA tournament win came in a playoff at the 1994 Deposit Guaranty Golf Classic in Madison, Mississippi, which was shortened by rain to only 36 holes (this win predated current PGA Tour rules which require 54 holes to be played for a tournament to be considered "official").
In 1992, he won three Nationwide Tour events and joined the PGA Tour in 1993. Henninger's first PGA tournament win was at the 1994 Deposit Guaranty Golf Classic in Madison, Mississippi, which was shortened by rain to only 36 holes (this victory occurred before current PGA Tour rules mandated that tournaments must be played over 54 holes).