Tulsa, and again lost his opening round match. In doubles, playing with Cedric Kauffmann, he reached the second round. The following week Niemeyer played U.S.A. F23 in Waco, reaching the semis in both singles and doubles. Two weeks later in Yokohama he again played doubles with Frenchman Kaufmann, and the tandem reached the semi-finals. The following week in Seoul, Niemeyer and Kaufmann reached the quarters. Meanwhile, in singles, Niemeyer lost both times in the Far East in the first round of the main draw. He failed to qualify for the main draw of the Osaka International Tennis Tournament, despite being the No. 2 seed. Niemeyer finally won a Challenger event singles match when he defeated Glenn Weiner in the first round in Knoxville. He lost to World No. 136 Xavier Malisse in the next round. In doubles, he and Jerry Turek lost their opening match. This concluded a disappointing 2000 for Niemeyer in singles, who saw his ranking drop from World No. 229 on January 10 to World No. 354 on December 18. He had a successful year in doubles however, improving from a ranking of World No. 380 to No. 245 for the same dates, and claiming two titles, one runners-up, and three semi-finals appearances. 2001 The year began as the previous won had left off. Niemeyer lost in the first round of USA F2 and F3 to far lesser ranked opponents in singles, but reached the semis of F2 and won F3 partnering his first-ever partner, fellow Quebecer Jocelyn Robichaud. He lost in the second round of qualifying in singles for the Dallas Challenger, he reached semis in doubles partnering Marcos Ondruska. Taking a week off, Niemeyer played his next three tournaments in Europe challengers. Partnering Cedric Kaufmann in doubles at Challenger 42 in Andrezieux, they lost in first round. The following week at the Cherbourg Challenger, they reached the finals. Niemeyer singles play finally improved. He qualified for both, reaching the second round of the main draw of the first event and the semi-finals at the second. To do so, he defeated three higher-ranked opponents before falling to World No. 192 Clemens Trimmel. At the Residenza Open two weeks later, held in Magdeburg, again getting through the qualifying rounds, Niemeyer reached the second round in singles. He won the doubles, partnering Radek Štěpánek. In April, Niemeyer again was called upon to play Davis Cup, in America's Zone