Bill Siegel played tennis at Hofstra from 1978 through 1980. As a senior in 1980 Bill was the first Hofstra player to win the East Coast Conference (ECC) Championship in both singles and doubles. He also won the Rider Invitational, was a Metropolitan Collegiate Conference finalist and went 26-1 on the season. As a junior, Bill was the Rider Invitational champion and an ECAC, ECC and Metropolitan Collegiate Conference semifinalist.

Bill went on to play professional tennis on the ATP Tour from 1980 to 1984 and became the first Hofstra player to earn an ATP world ranking in singles and doubles.

After retiring from professional tennis, Bill founded New Age Builders, Inc. and has been President since 1984. Bill is a widely recognized leader on Long Island in the Home Building Industry. New Age Builders, Inc. has received numerous awards including the prestigious National Association of Home Builders Energy Value Housing Award in 1996. Bill served on the Board of Directors of the Long Island Builders Institute for many years. At present New Age Builders, Inc. is constructing Energy Star workforce homes for the Town of East Hampton, as well as workforce homes in Bridgehampton for the Long Island Housing Partnership and the Town of Riverhead Office of Housing.