(as the No. 14 seed). He also lost in qualifying for the Hamlet Cup, in the first round. Unseeded at qualifying for the U.S. Open, lost to No. 11 seed Michael Kohlmann in the second round. In late September in singles Niemeyer lost in the first round of the Austin Challenger. The following week he lost in the first round of qualifying for the USTA Challenger of San Antonio. Three weeks later, Niemeyer won his first doubles title of his career, the U.S.A. F16 in Phoenix, partnering compatriot Jerry Turek. Losing in the first round in singles as the No. 2 seed, he reached the third round the following week in Clearwater at U.S.A. F17, as the top seed. He and Turek lost, however, in doubles qualifying. Two weeks later, Niemeyer lost in the first round of qualifying, as the top seed, for Acura USTA Pro Tennis Classic at Mission Hills. He won his first singles title the following week at the Champaign Challenger, winning a tight three-set final over compatriot and then No. 107 Sébastien Lareau. He would go on to lose in the opening round of the Burbank Challenger the following week. 2000 Niemeyer qualified for the main draw in singles at the Waikoloa Challenger in late January, losing 4–6, 2–6 to André Sá in the first round. He played Davis Cup the following week and won a dead rubber over Adrián García of Chile. In late February he played both singles and doubles at Cherbourg Challenger, losing in the first round in singles and the second in doubles, partnering Ota Fukárek. The following week he lost in qualifying, in the first round as the No. 3 seed, at the Besançon Challenger in France and repeated that fate the next week at the Sparkessen Magdeburg Open. In late March he lost in singles in the first round of U.S.A. F7, as the No. 4 seed, but the following week, at U.S.A. F8, reached the second round, as the top seed, while winning doubles, partnering again Doyle. The next week at U.S.A. F9, Niemeyer reached the finals of the singles, as the No. 3 seed, losing to Damián Furmanski 2–6, 7–5, 4–6. In doubles he reached the second round, with Keith Brill. Niemeyer lost in first round qualifying action in singles for the U.S. Men's Clay Court Championships at the beginning of May. He next played the inaugural Fergana