Fedorowicz, or "The Federation" as he is affectionately known on the chess circuit, continued to impress and in 1984 tied for third place in the United States. Championships, tied for second place at Hastings in 1984-1985 and tied for second place at Dortmund in 1986. He represented the United States. at the 1986 Dubai Chess Olympiad and scored well, earning himself the grandmaster title the same year. Since becoming a grandmaster, he has established himself as one of the United States" leading players, chalking up victories at Cannes 1987, Sesimbra 1987 and Wijk aan Zee 1990.
At Stockholm in 1990, he finished second to Alexei Shirov.
Fedorowicz has captained the United States. Olympiad team on two occasions and has frequently acted as a second to World Championship candidate Gata Kamsky. He has written or co-written a number of chess books and many articles for magazines and on-line publishers.
By way of hobbies he enjoys reading, cooking, playing and watching sports and a number of other board games, including Monopoly, Risk and Scrabble. As an active "New Yorker", he spends much of his time in the community, teaching chess to children, giving private lessons and attending chess camps.