Thomas dominated New Jersey’s amateur golf scene in the 1980s, when he won five of his unprecedented eight NJSGA Amateur Championships (1981, ’83, ’85, ’87, and ’88). He added three more Amateur titles in 1990, 1991 and 1994, far surpassing any other golfer. In addition, Thomas was runner-up five times in the NJSGA Amateur.
Thomas, playing out of Plainfield West 9, became the finest New Jersey amateur golfer during the period 1975 through 2000, putting an exclamation point on that reference when he won the 1993 U.S. Mid-Amateur Championship, earning an automatic berth into the 1994 Masters. He is one of only six New Jersey-born golfers to play in the Masters. Thomas was runner-up in the 1996 U.S. Public Links. Overall, he qualified for 10 U.S. Amateurs.
In 1991, Thomas became the first golfer to win the NJSGA Amateur and Mid-Amateur in the same year.